gimp/app/base/base-utils.c

141 lines
3.2 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib.h>
#ifdef G_OS_WIN32
#define _WIN32_WINNT 0x0500
#include <windows.h>
#include <process.h>
#endif
#ifdef G_OS_UNIX
/* For get_backtrace() */
#include <stdlib.h>
#include <string.h>
#include <execinfo.h>
#endif
#include "base-utils.h"
#define NUM_PROCESSORS_DEFAULT 1
#define MAX_FUNC 100
/* public functions */
gint
get_pid (void)
{
return (gint) getpid ();
}
gint
get_number_of_processors (void)
{
gint retval = NUM_PROCESSORS_DEFAULT;
#ifdef G_OS_UNIX
#if defined(HAVE_UNISTD_H) && defined(_SC_NPROCESSORS_ONLN)
retval = sysconf (_SC_NPROCESSORS_ONLN);
#endif
#endif
#ifdef G_OS_WIN32
SYSTEM_INFO system_info;
GetSystemInfo (&system_info);
retval = system_info.dwNumberOfProcessors;
#endif
return retval;
}
guint64
get_physical_memory_size (void)
{
#ifdef G_OS_UNIX
#if defined(HAVE_UNISTD_H) && defined(_SC_PHYS_PAGES) && defined (_SC_PAGE_SIZE)
return (guint64) sysconf (_SC_PHYS_PAGES) * sysconf (_SC_PAGE_SIZE);
#endif
#endif
#ifdef G_OS_WIN32
# if defined(_MSC_VER) && (_MSC_VER <= 1200)
MEMORYSTATUS memory_status;
memory_status.dwLength = sizeof (memory_status);
GlobalMemoryStatus (&memory_status);
return memory_status.dwTotalPhys;
# else
/* requires w2k and newer SDK than provided with msvc6 */
MEMORYSTATUSEX memory_status;
memory_status.dwLength = sizeof (memory_status);
if (GlobalMemoryStatusEx (&memory_status))
return memory_status.ullTotalPhys;
# endif
#endif
return 0;
}
/**
* get_backtrace:
*
* Returns: The current stack trace. Free with g_free(). Mainly meant
* for debugging, for example storing the allocation stack traces for
* objects to hunt down leaks.
**/
char *
get_backtrace (void)
{
#ifdef G_OS_UNIX
void *functions[MAX_FUNC];
char **function_names;
int n_functions;
int i;
GString *result;
/* Get symbols */
n_functions = backtrace (functions, MAX_FUNC);
function_names = backtrace_symbols (functions, n_functions);
/* Construct stack trace */
result = g_string_new ("");
for (i = 0; i < n_functions; i++)
g_string_append_printf (result, "%s\n", function_names[i]);
/* We must not free the function names themselves, we only need to
* free the array that points to them
*/
free (function_names);
return g_string_free (result, FALSE/*free_segment*/);
#else
return g_strdup ("backtrace() only available with GNU libc\n");
#endif
}