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