Initial import of the CDE 2.1.30 sources from the Open Group.

This commit is contained in:
Peter Howkins
2012-03-10 18:21:40 +00:00
commit 83b6996daa
18978 changed files with 3945623 additions and 0 deletions

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// $XConsortium: Destructable.C /main/8 1996/10/04 12:48:45 cde-hal $
#ifndef NATIVE_EXCEPTIONS
#include "Exceptions.hh"
void *Destructable::g_stack_start;
unsigned short Destructable::g_size;
#ifdef C_API
NEW_AND_DELETE_BODIES_SIMPLE(Destructable)
#endif
#ifdef DEBUG
#ifdef NOPE
struct Init
{
Init() {}
};
static Init I;
#endif
#endif
// /////////////////////////////////////////////////////////////////
// in_stack - return true if ptr is in stack memory
// /////////////////////////////////////////////////////////////////
int
Destructable::in_stack()
{
char stack_end;
PRINTF (("In_stack : %p -- %p | %p ",
g_stack_start, &stack_end, this));
if (((void *) this > &stack_end && (void *) this < g_stack_start) ||
((void *) this < &stack_end && (void *) this > g_stack_start))
{
PRINTF (("(stack)\n"));
return (1);
}
else
{
PRINTF (("(heap)\n"));
return (0);
}
}
// /////////////////////////////////////////////////////////////////
// in_stack_set_size - return 1 if in the stack, set size as well
// /////////////////////////////////////////////////////////////////
int
Destructable::in_stack_set_size()
{
char stack_end;
PRINTF (("In_stack_size : %p -- %p | %p ",
g_stack_start, &stack_end, this));
// Handle stack grows down case.
if ((void *) this > (void *) &stack_end &&
(void *) this < (void *) g_stack_start)
{
PRINTF (("(stack)\n"));
// Size unknown, also used to indicate stack grows down.
Destructable::g_size = 0;
return (1);
}
// Handle stack grows up case.
else if ((void *) this > (void *) g_stack_start &&
(void *) this < (void *) &stack_end)
{
// stack_end is just past this, so size is space between them.
Destructable::g_size = (unsigned long) &stack_end - (unsigned long) this;
#ifdef foobar
g_size -=
#endif
PRINTF (("(stack)\n"));
PRINTF ((" obj start = %p, end = %p, size = %d\n",
this, &stack_end, g_size));
return (1);
}
else
{
PRINTF (("(heap)\n"));
return (0);
}
}
#endif /* NATIVE_EXCEPTIONS */

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// $XConsortium: Destructable.hh /main/3 1996/06/11 16:50:40 cde-hal $
#ifndef _Exceptions_hh_active
#error "Include this file by including Exceptions.hh"
#endif
#ifdef C_API
#include "new_delete_simple.h"
#endif
class Destructable
{
#ifndef NATIVE_EXCEPTIONS
public:
Destructable();
// Copy and assignment constructors necessary to maintain proper
// f_in_stack state variable.
Destructable (const Destructable &);
Destructable &operator = (const Destructable &);
virtual ~Destructable();
int in_stack();
int in_stack_set_size();
#ifdef C_API
NEW_AND_DELETE_SIGNATURES(Destructable);
#endif
private:
friend class Jump_Environment;
friend class Exceptions;
static int stack_grows_down()
{ return (g_size == 0); }
// Need this special method since Cfront 2.1 doesn't allow direct
// call to destructor from another class.
void destruct();
static void *g_stack_start;
// We keep track of the size when the stack grows up.
// This is copied over to the unwind stack for stack-based objects.
static unsigned short g_size;
#endif
};

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// $TOG: Destructable_il.hh /main/9 1998/04/20 10:06:23 mgreess $
// /////////////////////////////////////////////////////////////////
// class constructor
// /////////////////////////////////////////////////////////////////
inline
Destructable::Destructable()
{
// Make sure the application has initialized this library.
#ifdef DEBUG
Exceptions::check_initialized();
#endif
if (in_stack_set_size())
Jump_Environment::register_object (this);
PRINTF ((" Constructed obj @ %p\n", this));
}
// NOTE: Both the copy and assignment constructors below init
// f_constructed to 0, which is going to be bogus if the derived
// class checks this value. This is a problem because we don't
// know if the derived class uses the default copy constructor or
// not. If it does we want f_constructed to be set to 1, otherwise
// we want it to be set to 0 until its methods complete.
// Ugh!
// /////////////////////////////////////////////////////////////////
// copy constructor
// /////////////////////////////////////////////////////////////////
inline
Destructable::Destructable (const Destructable &)
{
if (in_stack_set_size())
Jump_Environment::register_object (this);
PRINTF ((" Copy ctor @ %p\n", this));
}
// /////////////////////////////////////////////////////////////////
// assignment operator
// /////////////////////////////////////////////////////////////////
inline Destructable &
Destructable::operator = (const Destructable &)
{
// Assignment operator does nothing to preserve state of original
// creation of this object. State information is permanently
// associated with a Destructable object and cannot be assigned to.
PRINTF (("Assign op @ %p\n", this));
return (*this);
}
// /////////////////////////////////////////////////////////////////
// class destructor
// /////////////////////////////////////////////////////////////////
// There is currently no checking here for objects that have not
// been constructed. It is possible for this to be called for such
// objects if an exception is thrown in a constructor. See test18.C.
inline
Destructable::~Destructable()
{
if (in_stack())
Jump_Environment::unregister_object (this);
}
// /////////////////////////////////////////////////////////////////
// destruct function
// /////////////////////////////////////////////////////////////////
// This code relies on the fact that in cfront 2.1 this qualified
// call to the destructor will actually call the virtual destructor.
#if (!defined(hpux)) && (!defined(__uxp__)) && (CC_VERSION < 30)
inline void
Destructable::destruct()
{
#if defined(linux)
delete this;
#else
// Have to call this here since some compilers don't allow
// qualified calls through object pointer.
Destructable::~Destructable();
#endif
}
#endif

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// $XConsortium: Exception.C /main/4 1996/10/04 09:40:25 drk $
#ifndef NATIVE_EXCEPTIONS
#include "Exceptions.hh"
#include <memory.h>
Exception *Exception::g_current_exception;
#ifdef C_API
char* Exception::g_temp_space = 0;
char *Exception::g_next_avail = 0;
#else
char Exception::g_temp_space[G_TEMP_SPACE_SIZE];
char *Exception::g_next_avail = Exception::g_temp_space;
#endif
// /////////////////////////////////////////////////////////////////
// class constructor
// /////////////////////////////////////////////////////////////////
Exception::Exception()
: f_line(0), f_thrown_as_pointer(1), f_thrown(0), f_temporary(0)
{
PRINTF (("Constructed Exception obj @ %p\n", this));
}
// /////////////////////////////////////////////////////////////////
// operator delete
// /////////////////////////////////////////////////////////////////
void
Exception::operator delete (void *place)
{
// Move pointer back if it's in our temp space, else just free it.
if (place >= g_temp_space && place < g_temp_space + G_TEMP_SPACE_SIZE)
{
g_next_avail = (char *) place;
PRINTF (("De-alloc EXC @ %p\n", place));
}
else
{
free ((char *) place);
}
}
// /////////////////////////////////////////////////////////////////
// operator new
// /////////////////////////////////////////////////////////////////
// int arg is only used for type matching to insure that our version
// of new gets called to make temporaries.
void *
Exception::operator new (size_t size, int)
{
if (g_next_avail + size <= g_temp_space + G_TEMP_SPACE_SIZE)
{
void *p = g_next_avail;
g_next_avail += size;
PRINTF (("Allocate EXC @ %p, size = %ld\n", p, (long)size));
return (p);
}
else
{
Exceptions::error (Exceptions::f_msg_out_of_exception_memory,
Exceptions::INTERNAL_ERROR);
terminate();
}
}
// /////////////////////////////////////////////////////////////////
// throw_it
// /////////////////////////////////////////////////////////////////
// According to ARM, 15.2c temporary object thrown is of the static
// type of the operand to throw, so this method must be non-virtual.
// A non-virtual version of this function is created with macros in
// each subclass of the Exception object. See Exception.hh.
void
Exception::throw_it (unsigned int line, const char *file, int dbg)
{
// NOTE: This is the only place we can detect a throw of a pointer
// to a stack based object.
Exception *temp;
PRINTF (("Preparing to throw Exception object at %p:\n", this));
// Only make a temporary if the exception object is on the stack.
if (in_stack())
{
PRINTF ((" Exception is on the stack - copying it\n"));
// Use the special new operator which allocates the exception
// in reserved storage if there's no memory available.
temp = new (0) Exception (*this);
// We created it, so we should delete it.
temp->f_temporary = 1;
}
else
{
PRINTF ((" Exception is on the heap\n"));
temp = this;
}
temp->do_throw (line, file, dbg);
}
// /////////////////////////////////////////////////////////////////
// throw - throw the current exception
// /////////////////////////////////////////////////////////////////
void
Exception::do_throw (unsigned int line, const char *file, int debugging)
{
#ifdef EXC_DEBUG
if (f_line == 0)
{
PRINTF (("========== Throwing exception ==========\n"));
}
else // must be a rethrow
{
PRINTF (("========== Re-throwing exception ==========\n"));
}
#endif
// Save line and file if we don't already have it.
if (f_line == 0)
{
f_line = line;
f_file = file;
}
f_thrown = 1;
Jump_Environment::unwind_and_jump (this, debugging);
}
// /////////////////////////////////////////////////////////////////
// current_exception - return the current exception
// /////////////////////////////////////////////////////////////////
Exception &
Exception::current_exception()
{
if (g_current_exception == NULL)
{
Exceptions::error (Exceptions::f_msg_no_current_exception,
Exceptions::APPLICATION_ERROR);
terminate();
}
return (*g_current_exception);
}
// /////////////////////////////////////////////////////////////////
// (un)make_current - (un)make this exception the current one
// /////////////////////////////////////////////////////////////////
void
Exception::unmake_current()
{
PRINTF (("Current Exc POP %p <-- %p\n",
g_current_exception, f_previous_exception));
if (this != g_current_exception)
{
Exceptions::error ("Popped exception is the current one!",
Exceptions::INTERNAL_ERROR);
terminate();
}
// Called when a catch clause is exited.
g_current_exception = f_previous_exception;
}
void
Exception::make_current()
{
PRINTF (("Current Exc PUSH --> %p\n", this));
f_previous_exception = g_current_exception;
g_current_exception = this;
}
// /////////////////////////////////////////////////////////////////
// relocate - move this exception to the current top of stack
// /////////////////////////////////////////////////////////////////
void
Exception::relocate (Exception **exception, int length)
{
PRINTF (("Moving %p --> %p (%d bytes)\n",
*exception, g_next_avail, length));
// Slide the specified exception down to fill the hole below it.
if (g_next_avail >= (char *) *exception)
abort();
memcpy (g_next_avail, *exception, length);
*exception = (Exception *) g_next_avail;
g_next_avail = ((char *) *exception) + length;
}
// /////////////////////////////////////////////////////////////////
// is - return true this class is of type TYPE
// /////////////////////////////////////////////////////////////////
int
Exception::is (const char *type, const char *this_class)
{
PRINTF (("Type specified is <%s>\n", type));
while (isalnum (*type) && isalnum (*this_class) &&
*type++ == *this_class++);
if (isalnum (*type) || isalnum (*this_class))
return (0);
// Check for pointer types
while (isspace (*type))
{
type++;
}
PRINTF ((" var part is <%s>\n", type));
// See if one's a pointer and the other isn't.
if (*type == '*' && !f_thrown_as_pointer ||
*type != '*' && f_thrown_as_pointer)
return (0);
// Otherwise they are either both pointers or both objects/references.
return (1);
}
#endif /* NATIVE_EXCEPTIONS */

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// $TOG: Exception.hh /main/11 1998/04/20 09:55:15 mgreess $
#include <ctype.h>
#define G_TEMP_SPACE_SIZE 1024
#if defined(linux)
#define CASTEXCEPT (Exception*)
#else
#define CASTEXCEPT
#endif
class Exception : public Destructable
{
public:
#ifdef NATIVE_EXCEPTIONS
#if defined(hpux)
Exception() { }
#endif
#else
Exception();
#if defined(linux) && defined(EXC_DEBUG)
~Exception()
{
PRINTF (("Destroying Exception @ %p\n", this));
}
#elif defined(EXC_DEBUG)
~Exception()
{
PRINTF (("Destroying Exception @ %p\n", this));
}
#endif
// For printing debugging info. Can be overloaded by derived classes.
virtual void print_exception()
{ }
virtual const char *class_name()
{ return ("Exception"); }
Exception *prepare_to_throw();
// This operator invoked if this is thrown as an object/reference
Exception *operator ->()
{ if (!f_thrown) f_thrown_as_pointer = 0;
return (this); }
operator Exception *()
{ return (this); }
virtual int isa (const char *type)
{ return (is (type, "Exception")); }
int is (const char *type, const char *this_class);
static Exception &current_exception();
const char *file()
{ return (f_file); }
unsigned short line()
{ return (f_line); }
// Need to provide a plain operator new definition because we
// have a definition of the other one below. (See the ARM.)
#ifndef USL
static void *operator new (size_t size)
{ return (::operator new (size)); }
#endif
static void operator delete (void *place);
// For initial throw. Redefined by decendents.
// Makes temporaries for stack based objects and calls do_throw.
void throw_it (unsigned int line, const char *file, int debugging);
// Actual throw code. Also used for rethrows.
void do_throw (unsigned int line = 0,
const char *file = "(unknown)",
int debugging = 0);
// Length is only valid for exceptions at the top of the stack!
int length() { return (g_next_avail - (char *) this); }
void unmake_current();
void make_current();
static void relocate (Exception **exception, int length);
protected:
friend class Jump_Environment;
friend class Exceptions;
#if defined(hpux)||defined(__uxp__)
#define MakeOperatorNewPublic
#endif
#ifdef MakeOperatorNewPublic
// A problem with the HP-UX 3.65 compiler requires us to make this public.
// And, since we gen the Templates.nd.c file on a non-HPUX platform, we need
// a second way to trigger the change.
public:
#endif
static void *operator new (size_t size, int);
#ifdef MakeOperatorNewPublic
protected:
#endif
// f_thrown flag is a safty feature to make sure that the f_throw_as_pointer
// flag can't be reset accidently by the user calling operator ->
#ifdef PURIFY
unsigned char f_thrown;
unsigned char f_thrown_as_pointer;
unsigned char f_temporary;
#else
unsigned char f_thrown : 1;
unsigned char f_thrown_as_pointer : 1;
unsigned char f_temporary : 1;
#endif
private:
// Line and file where exception was originally thrown from.
const char *f_file;
unsigned short f_line;
Exception *f_previous_exception;
static Exception *g_current_exception;
#ifdef C_API
static char *g_temp_space;
#else
static char g_temp_space[G_TEMP_SPACE_SIZE];
#endif
static char *g_next_avail;
#ifdef C_API
friend void initialize_exception();
friend void quit_exception();
#endif
#endif /* NATIVE_EXCEPTIONS */
};
// /////////////////////////////////////////////////////////////////
// DECLARE_EXCEPTION - macros for derived classes
// /////////////////////////////////////////////////////////////////
#ifndef NATIVE_EXCEPTIONS
// NOTE: class_name, is, and isa should be renamed to _exc_...
#define _DECL_START(NAME) \
const char *class_name() \
{ return (STRINGIFY(NAME)); } \
void throw_it (unsigned int line, const char *file, int dbg) \
{ Exception *temp; \
if (in_stack()) { \
temp = new (0) NAME (*this); \
(Exception *) (((NAME *)temp)->f_temporary = 1); \
} else \
temp = this; \
temp->do_throw (line, file, dbg); } \
NAME *operator ->() { if (!f_thrown) f_thrown_as_pointer = 0; \
return (this); } \
operator NAME *() { return (this); } \
int isa (const char *type) \
{ return (is (type, STRINGIFY(NAME)) ||
#define _DECL_END \
); } \
// MUST be the first thing in a subclass or protections get screwed up.
#define DECLARE_EXCEPTION DECLARE_EXCEPTION1
#define DECLARE_EXCEPTION1(NAME,SUPER1) \
_DECL_START (NAME) \
SUPER1::isa (type) \
_DECL_END
#define DECLARE_EXCEPTION2(NAME,SUPER1,SUPER2) \
_DECL_START (NAME) \
SUPER1::isa (type) || \
SUPER2::isa (type) \
_DECL_END
#define DECLARE_EXCEPTION3(NAME,SUPER1,SUPER2,SUPER3) \
_DECL_START (NAME) \
SUPER1::isa (type) || \
SUPER2::isa (type) || \
SUPER3::isa (type) \
_DECL_END
#else
#define DECLARE_EXCEPTION(NAME,SUPER1)
#define DECLARE_EXCEPTION1(NAME,SUPER1)
#define DECLARE_EXCEPTION2(NAME,SUPER1,SUPER2)
#define DECLARE_EXCEPTION3(NAME,SUPER1,SUPER2)
#endif /* NATIVE_EXCEPTIONS */
// Users can define more if they need to...

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// $XConsortium: Exceptions.cc /main/3 1996/06/11 16:51:03 cde-hal $
#ifndef NATIVE_EXCEPTIONS
#include "Exceptions.hh"
//#include <new.h>
#include <memory.h>
#include <string.h>
#ifdef C_API
char* Exceptions::f_msg_internal_error = 0;
char* Exceptions::f_msg_application_error = 0;
char* Exceptions::f_msg_throw_message = 0;
char* Exceptions::f_msg_not_initialized = 0;
char* Exceptions::f_msg_initialized_twice = 0;
char* Exceptions::f_msg_not_caught = 0;
char* Exceptions::f_msg_no_current_exception = 0;
char* Exceptions::f_msg_throw_from_terminate = 0;
char* Exceptions::f_msg_throw_from_error_handler = 0;
char* Exceptions::f_msg_throw_from_destructor = 0;
char* Exceptions::f_msg_throw_ptr_to_stack = 0;
char* Exceptions::f_msg_out_of_exception_memory = 0;
char* Exceptions::f_msg_out_of_obj_stack_memory = 0;
char* Exceptions::f_msg_memory_already_freed = 0;
#else
char *Exceptions::f_msg_internal_error = "Internal exceptions error:";
char *Exceptions::f_msg_application_error = "Application exceptions error:";
char *Exceptions::f_msg_throw_message = "Application threw exception:";
char *Exceptions::f_msg_not_initialized =
"Exceptions library not initialized with INIT_EXCEPTIONS().";
char *Exceptions::f_msg_initialized_twice =
"Attept to call INIT_EXCEPTIONS() more than once.";
char *Exceptions::f_msg_not_caught =
"Exception not caught.";
char *Exceptions::f_msg_no_current_exception =
"There is no current exception (for catch or rethrow).";
char *Exceptions::f_msg_throw_from_terminate =
"Exceptions may not be thrown from terminate.";
char *Exceptions::f_msg_throw_from_error_handler =
"Exceptions may not be thrown from error handler.";
char *Exceptions::f_msg_throw_from_destructor =
"Exited destructor with throw while handling an exception.";
char *Exceptions::f_msg_throw_ptr_to_stack =
"Threw a pointer to an automatic (stack-based) exceptions object.";
char *Exceptions::f_msg_out_of_exception_memory =
"Not enough memory to allocate an exception object.";
char *Exceptions::f_msg_out_of_obj_stack_memory =
"Not enough memory to allocate object stack.";
char *Exceptions::f_msg_memory_already_freed =
"Tried to alloc or realloc pool memory that was previously freed.";
#endif
// /////////////////////////////////////////////////////////////////
// initialize - initialize the exceptions library
// /////////////////////////////////////////////////////////////////
void
Exceptions::initialize (void *ptr)
{
PRINTF (("Initializing exceptions library\n"));
if (Destructable::g_stack_start != NULL)
{
error (f_msg_initialized_twice, APPLICATION_ERROR);
terminate();
}
else
{
// These two values MUST be initialized before the static
// Jump_Environment below, or the its Destructable base class
// constructor will fail because it won't think the library
// is initialized or it may think the Jump Environment is on
// the stack because f_stack_start is 0.
Destructable::g_stack_start = ptr;
// The following is the global jump environment. According to ARM
// (6.7) this isn't initialized until the first call to this function,
// NOT at a global level before main() is called. This is important
// because Jump_Environment is subclassed of Destructable, whose
// constructor expects g_stack_start to be non-zero.
static Jump_Environment __jump_env;
if (setjmp (__jump_env.f_env) != 0)
{
// Re-set base environment to allow for the creation of
// Destructable objects in error handler and terminate
// terminate function.
Jump_Environment::g_jump_env_stack = &__jump_env;
error (f_msg_not_caught, APPLICATION_ERROR);
terminate();
}
}
}
// Static variable declarations
Exceptions::error_handler_t Exceptions::g_error_handler;
// Error message declarations
// The error messages are stored here because many appear in the
// header files and we don't want to duplicate them in every app
// that uses the header files.
// /////////////////////////////////////////////////////////////////
// set_error_handler
// /////////////////////////////////////////////////////////////////
Exceptions::error_handler_t
Exceptions::set_error_handler (error_handler_t error_handler)
{
error_handler_t previous = g_error_handler;
g_error_handler = error_handler;
return (previous);
}
// /////////////////////////////////////////////////////////////////
// error - print a useful error message
// /////////////////////////////////////////////////////////////////
void
Exceptions::error (const char *message, error_type_t error_type)
{
static char buffer[3][100];
static char *lines[3] = { buffer[0], buffer[1], buffer[2] };
int count = 0;
if (error_type == INTERNAL_ERROR)
strcpy (buffer[count++], f_msg_internal_error);
else if (error_type == APPLICATION_ERROR)
strcpy (buffer[count++], f_msg_application_error);
else
strcpy (buffer[count++], f_msg_throw_message);
// Don't use fprintf because it may try to allocate memory.
if (Exception::g_current_exception != NULL)
{
sprintf (buffer[count++],
" In exception thrown in file \"%s\", line %d,",
Exception::g_current_exception->f_file,
Exception::g_current_exception->f_line);
}
if (message != NULL)
sprintf (buffer[count++], " %s", message);
// Call user print function if set, otherwise just dump lines.
if (g_error_handler != NULL)
{
try
{
// Reset global variable to NULL before calling to prevent
// the possibility of recursive calls.
Exceptions::error_handler_t current = set_error_handler (NULL);
(*current) ((const char**)lines, count);
set_error_handler (current);
}
catch_any()
{
// Error handler will be NULL at this point.
Exceptions::error (Exceptions::f_msg_throw_from_error_handler,
Exceptions::APPLICATION_ERROR);
terminate();
}
end_try;
}
else
{
for (int i = 0; i < count; i++)
{
fputs (buffer[i], stderr);
fputc ('\n', stderr);
}
}
}
// /////////////////////////////////////////////////////////////////
// check_initialized - exit with error if not initialized
// /////////////////////////////////////////////////////////////////
void
Exceptions::check_initialized()
{
void terminate();
if (Destructable::g_stack_start == NULL)
{
// Can't call user defined error handler unless we're initialized.
// Also can't do lazy initialization because we need the stack
// pointer from the start of main, not here. From here is good
// enough for terminating, however.
INIT_EXCEPTIONS();
error (f_msg_not_initialized, APPLICATION_ERROR);
terminate();
}
}
#endif /* NATIVE_EXCEPTIONS */

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// $XConsortium: Exceptions.hh /main/4 1996/07/05 15:16:42 rws $
#ifndef _Exceptions_hh
#define _Exceptions_hh
#define _Exceptions_hh_active
#ifndef NATIVE_EXCEPTIONS
extern "C" {
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
}
#ifdef EXC_DEBUG
#define PRINTF(MSG) printf MSG
#ifndef DEBUG
#define DEBUG
#endif
#ifndef DEBUG_THROW
#define DEBUG_THROW
#endif
#ifndef DEBUG_CATCH
#define DEBUG_CATCH
#endif
#else
#define PRINTF(MSG)
#endif
#ifndef STRINGIFY
#if !defined(__STDC__) && !defined(hpux)
#define STRINGIFY(S) "S"
#else
#define STRINGIFY(S) #S
#endif
#endif
#endif /* NATIVE_EXCEPTIONS */
#include "terminate.hh"
#include "Destructable.hh"
#include "Exception.hh"
#ifdef NATIVE_EXCEPTIONS
#define INIT_EXCEPTIONS()
#define throw(OBJ) throw OBJ
#define rethrow throw
#define catch_any() catch(...)
#define catch_noarg(OBJ) catch(OBJ)
#define catch(TYPE,OBJ) catch(TYPE OBJ)
#define end_try
#else
// This macro, which should be the first thing in main, establishes a jump
// environment for the context of the entire program.
#define INIT_EXCEPTIONS() \
{ int __stack_start; Exceptions::initialize (&__stack_start); }
// TRY MACRO
#define try \
{ \
Jump_Environment __jump_env; \
if (setjmp (__jump_env.f_env) == 0) {
// THROW MACROS
#ifdef DEBUG_THROW
#define DEBUG_THROW_FLAG 1
#else
#define DEBUG_THROW_FLAG 0
#endif
// This works if OBJ is an object or a pointer since Exception objects
// overload operator ->.
#if !defined(hpux) && !defined(USL)
#define throw(OBJ) \
(OBJ)->throw_it (__LINE__, __FILE__, DEBUG_THROW_FLAG)
#else
#define throw(OBJ) \
OBJ->throw_it (__LINE__, __FILE__, DEBUG_THROW_FLAG)
#endif
#define rethrow \
Exception::current_exception().do_throw (__LINE__, __FILE__)
// CATCH MACROS
#ifdef DEBUG_CATCH
#define PRINT_CATCH \
fprintf (stderr, "Application caught exception:\n"); \
fprintf (stderr, " Thrown from file \"%s\", line %d\n", \
Exception::current_exception().file(), \
Exception::current_exception().line()); \
fprintf (stderr, " Caught in file \"%s\", line %d.\n", \
__FILE__, __LINE__);
#else
#define PRINT_CATCH
#endif
#define catch_any() \
} else if (1) { \
PRINT_CATCH
#define catch_noarg(OBJ) \
} else if (Exception::current_exception().isa (STRINGIFY(OBJ))) { \
PRINT_CATCH
#define catch(TYPE,OBJ) \
catch_noarg (TYPE) \
TYPE OBJ = (TYPE) Exception::current_exception();
#define end_try \
} else { \
rethrow; \
} \
}
class Exceptions
{
public:
typedef void (*error_handler_t) (const char *[], int);
static void initialize (void *ptr);
// Error handling stuff (message appear below).
enum error_type_t { INTERNAL_ERROR, APPLICATION_ERROR, THROW_MESSAGE };
static void error (const char *, error_type_t);
static error_handler_t set_error_handler (error_handler_t);
private:
friend class Destructable;
friend class Jump_Environment;
friend class Unwind_Stack;
friend class Exception;
friend void terminate();
static void check_initialized();
protected: // variables
// function pointer to error message handler
static error_handler_t g_error_handler;
// Error types
static char *f_msg_internal_error;
static char *f_msg_application_error;
static char *f_msg_throw_message;
// Usage errors.
static char *f_msg_not_initialized;
static char *f_msg_initialized_twice;
static char *f_msg_not_caught;
static char *f_msg_no_current_exception;
static char *f_msg_throw_from_terminate;
static char *f_msg_throw_from_error_handler;
static char *f_msg_throw_from_destructor;
static char *f_msg_throw_ptr_to_stack;
// Internal memory errors.
static char *f_msg_out_of_exception_memory;
static char *f_msg_out_of_obj_stack_memory;
static char *f_msg_memory_already_freed;
#ifdef C_API
friend void initialize_exception();
friend void quit_exception();
#endif
};
// includes for inline functions
#include "Jump_Environment.hh"
#include "Destructable_il.hh"
#endif /* NATIVE_EXCEPTIONS */
#undef _Exceptions_hh_active
#endif /* _Exceptions_hh */
/* DO NOT ADD ANY LINES AFTER THIS #endif */

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@@ -0,0 +1,47 @@
XCOMM $TOG: Imakefile /main/12 1997/09/05 11:29:53 samborn $
XCOMM ** WARNING **
XCOMM
XCOMM The files named here may appear in many different Imakefiles.
XCOMM If you add or remove a file, be sure to update all locations.
XCOMM It's unfortunate, but all this redundancy serves a purpose.
XCOMM
XCOMM Other possible locations are:
XCOMM .../lib/DtMmdb/Imakefile
XCOMM .../lib/DtMmdb/<subdir>/Imakefile
XCOMM .../programs/dtinfo/mmdb/Imakefile
XCOMM .../programs/dtinfo/mmdb/<subdir>/Imakefile
#define DoNormalLib NormalLibDtMmdb
#define DoSharedLib SharedLibDtMmdb
#define DoDebugLib DebugLibDtMmdb
#define DoProfileLib ProfileLibDtMmdb
#define LibName DtMmdb
#define SoRev SODTMMDBREV
#define LibHeaders NO
#define LibCreate NO
#define LargePICTable YES
#define CplusplusSource YES
DEPEND_DEFINES = $(CXXDEPENDINCLUDES)
#if defined(SunArchitecture) && CplusplusCompilerMajorVersion > 3
EXCEPTION_DEFINES = -DHAS_TERMINATE
#endif
DEFINES = -DC_API -DCC_VERSION=30 -DCHECK_INITIALIZED $(EXCEPTION_DEFINES)
BASE_SRCS = \
Jump_Environment.C Exceptions.C Exception.C \
Destructable.C terminate.C
C_API_SRCS = init.C
SRCS = $(BASE_SRCS) $(C_API_SRCS)
OBJS = $(BASE_SRCS:.C=.o) $(C_API_SRCS:.C=.o)
#include <Library.tmpl>
SubdirLibraryRule($(OBJS))
DependTarget()

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@@ -0,0 +1,156 @@
// $XConsortium: Jump_Environment.C /main/6 1996/10/04 09:37:00 drk $
#ifndef NATIVE_EXCEPTIONS
#include "Exceptions.hh"
Jump_Environment *Jump_Environment::g_jump_env_stack;
#ifdef EXC_DEBUG
int Jump_Environment::g_level;
#endif
unsigned short Unwind_Stack::g_top ;
#ifdef C_API
Unwind_Record* Unwind_Stack::g_stack = 0; // inited in init.C
#else
Unwind_Record Unwind_Stack::g_stack[UNWIND_STACK_SIZE];
#endif
// /////////////////////////////////////////////////////////////////
// Jump_Environment - class constructor
// /////////////////////////////////////////////////////////////////
Jump_Environment::Jump_Environment()
: f_unwinding (0), f_active_exception (NULL)
{
PRINTF (("<%d> New Jump_Environment @ %p\n", ++g_level, this));
// Push this on to the top of the jump env stack.
f_next = g_jump_env_stack;
g_jump_env_stack = this;
}
// /////////////////////////////////////////////////////////////////
// class destructor
// /////////////////////////////////////////////////////////////////
Jump_Environment::~Jump_Environment()
{
// If g_jump_env_stack == this an exception wasn't thrown.
// (Because at throw time we set g_jump_env_stack to f_next.)
if (g_jump_env_stack == this)
{
g_jump_env_stack = f_next;
}
// An exception was thrown in our try block.
// An exception may have been thrown in our catch block.
// If one was, g_jump_env_stack->f_active_exception != NULL.
if (f_active_exception != NULL)
{
delete_active();
}
PRINTF (("<%d> Done with Jump_Environment @ %p\n",
g_level--, this));
}
// /////////////////////////////////////////////////////////////////
// unwind - call destructors for stack based objects
// /////////////////////////////////////////////////////////////////
void
Jump_Environment::do_unwind_and_jump (Exception *exception, int debugging)
{
PRINTF (("----- <%d> Unwinding stack -----\n", g_level));
// Remember the current exception so we can delete it later.
f_active_exception = exception;
// Check for a throw out of a destructor.
if (f_unwinding)
{
Exceptions::error (Exceptions::f_msg_throw_from_destructor,
Exceptions::APPLICATION_ERROR);
terminate();
}
f_unwinding = 1;
// Call the destructor of each objet on the stack in reverse.
// Length is automatically decremented as each object unregisters itself.
while (!f_unwind_stack.empty())
{
PRINTF (("* Calling dtor of %p\n", f_unwind_stack.top().f_object));
#if CC_VERSION < 30
f_unwind_stack.top().f_object->destruct();
#else
f_unwind_stack.top().f_object->~Destructable();
#endif
}
// This Jump Environment is no longer needed, so we need to pull it off
// the global jump env stack. Any new stack objects from this point
// on must be registed in the enclosing Jump Environment scope for the
// purposes of exceptions or otherwise. The memory associated with the
// unwind_stack is freed when we exit the scope or throw an exception.
g_jump_env_stack = f_next;
PRINTF (("----- <%d> Unwind complete -----\n", g_level));
// Make the current exception official (it may move in the process).
f_active_exception->make_current();
// Print a message about the throw point if debugging is on.
if (debugging)
{
Exceptions::error_handler_t saved = Exceptions::set_error_handler (NULL);
Exceptions::error (NULL, Exceptions::THROW_MESSAGE);
Exceptions::set_error_handler (saved);
}
// And away we go...
longjmp();
}
// /////////////////////////////////////////////////////////////////
// delete_active - delete active exception, maybe move pending
// /////////////////////////////////////////////////////////////////
void
Jump_Environment::delete_active()
{
// For starters, it's no longer the current exception.
f_active_exception->unmake_current();
// We normally delete the current exception when it's enclosing
// environment is destructed, UNLESS the same exception is being
// rethrown to the handler above. g_jump_env_stack points to
// the Jump_Environment that is unwinding.
if (f_active_exception->f_temporary &&
(g_jump_env_stack == NULL || f_active_exception != pending_exception()))
{
// If there's one pending we created and a current one, we are going
// to have to move the pending one down on our stack after
// deleting the current one, so we need to remember where it ends.
// If the pending exception == the current one, then we're just
// returning to the scope of a previous exception.
if (g_jump_env_stack != NULL &&
pending_exception() != NULL &&
pending_exception()->f_temporary &&
pending_exception() != Exception::g_current_exception)
{
// The length() method is only valid here!
int length = pending_exception()->length();
delete f_active_exception;
Exception::relocate (&g_jump_env_stack->f_active_exception,
length);
}
else // Just delete it -- no move necessary.
{
delete f_active_exception;
}
}
}
#endif /* NATIVE_EXCEPTIONS */

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// $XConsortium: Jump_Environment.hh /main/6 1996/10/04 09:35:47 drk $
#include <setjmp.h>
#include "Unwind_Stack.hh"
class Jump_Environment : public Destructable
{
public:
Jump_Environment();
// Only unregister the environment if it hasn't been unregistered.
// It is unregistered when an exception is thrown and stack unwound.
~Jump_Environment();
static void register_object (Destructable *object);
static void unregister_object (Destructable *object);
static void unwind_and_jump (Exception *current, int debugging)
{ g_jump_env_stack->do_unwind_and_jump (current, debugging); }
// Must be public so setjmp can be called on it. Can't use a
// method because of the way setjmp works.
jmp_buf f_env;
#ifdef SVR4
// NOTE: this MUST follow f_env...mask bug in setjmp that overwrites our data
// 13:59 08/03/93 - jbm
int f_filler[8] ;
#endif
private:
void longjmp()
{ ::longjmp (f_env, 1); }
void do_register (Destructable *);
void do_unregister (Destructable *);
void do_unwind_and_jump (Exception *, int debugging);
void delete_active();
// The pending exception is the exception that is about to become
// the current exception. It may be NULL if none has been thrown.
static Exception *pending_exception()
{ return (g_jump_env_stack->f_active_exception); }
private: // variables
Exception *f_active_exception;
Jump_Environment *f_next; // For Jump_Enviroment stacking.
unsigned char f_unwinding; // True when unwind in progress.
Unwind_Stack f_unwind_stack; // Stack of objects to unwind.
friend class Exceptions;
static Jump_Environment *g_jump_env_stack;
static Jump_Environment *g_used_jump_env_stack;
#ifdef EXC_DEBUG
static int g_level;
#endif
};
// /////////////////////////////////////////////////////////////////
// do_register
// /////////////////////////////////////////////////////////////////
// Register the object if it isn't a member of another Destructable
// object. If it is a member of another, that object (or the object
// that it's a member of) must be the last thing we registered.
// First check for downward growing stack. In this case the object
// is part of another if it's address is greater than the start of
// that other object. If it wasn't a member of that object, it's
// address would have to be lower than that object, having been
// created after that object.
// Second check for upward growing stack. In this case the object
// is part of another if it's address is less than the end of that
// other object.
// If the stack is empty, it's the first object and can't be in another.
inline void
Jump_Environment::do_register (Destructable *object)
{
PRINTF ((" Considering object %p: ", object));
if (f_unwind_stack.empty() ||
(Destructable::stack_grows_down() ?
(unsigned long) object < f_unwind_stack.top().object_start() :
(unsigned long) object > f_unwind_stack.top().object_end()))
{
PRINTF ((" -- registered\n"));
f_unwind_stack.push (object, Destructable::g_size);
}
#ifdef EXC_DEBUG
else
{
PRINTF ((" -- not registered\n"));
}
#endif
}
// /////////////////////////////////////////////////////////////////
// unregister_object
// /////////////////////////////////////////////////////////////////
inline void
Jump_Environment::do_unregister (Destructable *object)
{
PRINTF ((" Unregister object @ %p: ", object));
// Don't do anything it it wasn't on the stack. It must have been
// part of another object or was never really constructed.
if (!f_unwind_stack.empty() && f_unwind_stack.top().f_object == object)
{
PRINTF ((" -- removed\n"));
f_unwind_stack.pop();
}
#ifdef EXC_DEBUG
else
{
PRINTF ((" -- never registered\n"));
}
#endif
}
// /////////////////////////////////////////////////////////////////
// register/unregister
// /////////////////////////////////////////////////////////////////
inline void
Jump_Environment::register_object (Destructable *object)
{
g_jump_env_stack->do_register (object);
}
inline void
Jump_Environment::unregister_object (Destructable *object)
{
g_jump_env_stack->do_unregister (object);
}

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// $XConsortium: Unwind_Stack.hh /main/5 1996/10/04 09:34:56 drk $
class Destructable;
#define UNWIND_STACK_SIZE 512
class Unwind_Record
{
public:
Destructable *f_object;
unsigned short f_size;
void set (Destructable *object, unsigned int size)
{ f_object = object; f_size = size; }
unsigned long object_start() const
{ return ((unsigned long) f_object); }
unsigned long object_end() const
{ return ((unsigned long) f_object + f_size); }
};
class Unwind_Stack
{
public:
Unwind_Stack()
{ f_bottom = g_top;
PRINTF (("+++ New TOS = %d\n", f_bottom)); }
~Unwind_Stack()
{ g_top = f_bottom;
PRINTF (("--- Reset TOS = %d\n", g_top)); }
void push (Destructable *object, unsigned int size);
void pop()
{ g_top--;
PRINTF ((" Pop [ %d ]\n", g_top)); }
int empty() const
{ return (g_top == f_bottom); }
const Unwind_Record &top() const
{ return (g_stack[g_top-1]); }
private:
unsigned short f_bottom;
static unsigned short g_top;
#ifdef C_API
static Unwind_Record* g_stack;
friend void initialize_exception();
friend void quit_exception();
#else
static Unwind_Record g_stack[UNWIND_STACK_SIZE];
#endif
};
inline void
Unwind_Stack::push (Destructable *object, unsigned int size)
{
void terminate();
if (g_top > UNWIND_STACK_SIZE)
{
Exceptions::error (Exceptions::f_msg_out_of_obj_stack_memory,
Exceptions::INTERNAL_ERROR);
terminate();
}
PRINTF ((" Push [ %d ] = %p\n", g_top, object));
g_stack[g_top++].set (object, size);
}

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/* $XConsortium: exception_init.h /main/3 1996/06/11 16:51:51 cde-hal $ */
void initialize_exception();
void quit_exception();

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@@ -0,0 +1,58 @@
// $XConsortium: init.cc /main/3 1996/06/11 16:51:58 cde-hal $
#ifndef NATIVE_EXCEPTIONS
#include "Exceptions.hh"
//#define G_TEMP_SPACE_SIZE 1024
void initialize_exception()
{
Exceptions::f_msg_internal_error = "Internal exceptions error:";
Exceptions::f_msg_application_error = "Application exceptions error:";
Exceptions::f_msg_throw_message = "Application threw exception:";
Exceptions::f_msg_not_initialized =
"Exceptions library not initialized with INIT_EXCEPTIONS().";
Exceptions::f_msg_initialized_twice =
"Attept to call INIT_EXCEPTIONS() more than once.";
Exceptions::f_msg_not_caught =
"Exception not caught.";
Exceptions::f_msg_no_current_exception =
"There is no current exception (for catch or rethrow).";
Exceptions::f_msg_throw_from_terminate =
"Exceptions may not be thrown from terminate.";
Exceptions::f_msg_throw_from_error_handler =
"Exceptions may not be thrown from error handler.";
Exceptions::f_msg_throw_from_destructor =
"Exited destructor with throw while handling an exception.";
Exceptions::f_msg_throw_ptr_to_stack =
"Threw a pointer to an automatic (stack-based) exceptions object.";
Exceptions::f_msg_out_of_exception_memory =
"Not enough memory to allocate an exception object.";
Exceptions::f_msg_out_of_obj_stack_memory =
"Not enough memory to allocate object stack.";
Exceptions::f_msg_memory_already_freed =
"Tried to alloc or realloc pool memory that was previously freed.";
Unwind_Stack::g_stack = new Unwind_Record[UNWIND_STACK_SIZE];
Exception::g_temp_space = new char[G_TEMP_SPACE_SIZE];
Exception::g_next_avail = Exception::g_temp_space;
}
void quit_exception()
{
delete Unwind_Stack::g_stack;
}
#endif

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/* $XConsortium: new_delete_simple.h /main/3 1996/06/11 16:52:04 cde-hal $ */
#ifndef _new_delete_simple_h
#define _new_delete_simple_h 1
#define NEW_AND_DELETE_SIGNATURES(class_name) \
void* operator new( size_t ); \
void* operator new( size_t, void* ); \
void operator delete( void* )
#ifdef C_API
#include <stdlib.h>
#define NEW_AND_DELETE_BODIES_SIMPLE(class_name) \
\
void* class_name::operator new( size_t sz )\
{\
return (void*)malloc(sz); \
}\
\
void* class_name::operator new( size_t sz, void* ptr )\
{\
return (void*)ptr; \
}\
\
void class_name::operator delete( void* p )\
{\
::operator delete(p); \
}
#else
#include <new.h>
#endif
#endif

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@@ -0,0 +1,51 @@
// $TOG: terminate.C /main/4 1997/09/05 11:30:17 samborn $
#if !defined(NATIVE_EXCEPTIONS) && !defined(HAS_TERMINATE)
#include "Exceptions.hh"
typedef void (*PFV)();
static PFV _terminate_handler = NULL;
PFV
set_terminate (PFV handler)
{
PFV old_handler = _terminate_handler;
_terminate_handler = handler != NULL ? handler : NULL;
return (old_handler);
}
void
terminate()
{
if (_terminate_handler != NULL)
{
// Reset terminate handler to NULL before handling to
// avoid potential recursive calls due to exceptions
// abuse in the terminate handler.
PFV handler = _terminate_handler;
_terminate_handler = NULL;
try
{
(*handler)();
}
catch_any()
{
Exceptions::error (Exceptions::f_msg_throw_from_terminate,
Exceptions::APPLICATION_ERROR);
}
end_try;
}
abort();
}
#else
#ifdef hpux
// HPUX doesn't define the set_terminate function from the ARM.
typedef void (*PFV)();
PFV set_terminate (PFV) { return (0); }
#endif
#endif /* NATIVE_EXCEPTIONS */

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@@ -0,0 +1,9 @@
// $XConsortium: terminate.hh /main/3 1996/06/11 16:52:15 cde-hal $
#ifndef _terminate_hh
#define _terminate_hh
void (*set_terminate (void(*)()))();
void terminate();
#endif /* _terminate_hh */
/* DO NOT ADD ANY LINES AFTER THIS #endif */