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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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 2
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenlib/intern/system.c
* \ingroup bli
*/
#include <stdio.h>
#include <stdlib.h>
#include "BLI_system.h"
#include "MEM_guardedalloc.h"
/* for backtrace */
#if defined(__linux__) || defined(__APPLE__)
# include <execinfo.h>
#elif defined(WIN32)
# include <windows.h>
# include <DbgHelp.h>
#endif
int BLI_cpu_support_sse2(void)
{
#if defined(__x86_64__) || defined(_M_X64)
/* x86_64 always has SSE2 instructions */
return 1;
#elif defined(__GNUC__) && defined(i386)
/* for GCC x86 we check cpuid */
unsigned int d;
__asm__(
"pushl %%ebx\n\t"
"cpuid\n\t"
"popl %%ebx\n\t"
: "=d" (d)
: "a" (1));
return (d & 0x04000000) != 0;
#elif (defined(_MSC_VER) && defined(_M_IX86))
/* also check cpuid for MSVC x86 */
unsigned int d;
__asm {
xor eax, eax
inc eax
push ebx
cpuid
pop ebx
mov d, edx
}
return (d & 0x04000000) != 0;
#else
return 0;
#endif
}
/**
* Write a backtrace into a file for systems which support it.
*/
void BLI_system_backtrace(FILE *fp)
{
/* ------------- */
/* Linux / Apple */
#if defined(__linux__) || defined(__APPLE__)
#define SIZE 100
void *buffer[SIZE];
int nptrs;
char **strings;
int i;
/* include a backtrace for good measure */
nptrs = backtrace(buffer, SIZE);
strings = backtrace_symbols(buffer, nptrs);
for (i = 0; i < nptrs; i++) {
fputs(strings[i], fp);
fputc('\n', fp);
}
free(strings);
#undef SIZE
/* -------- */
/* Windows */
#elif defined(_MSC_VER)
#ifndef NDEBUG
#define MAXSYMBOL 256
#define SIZE 100
unsigned short i;
void *stack[SIZE];
unsigned short nframes;
SYMBOL_INFO *symbolinfo;
HANDLE process;
process = GetCurrentProcess();
SymInitialize(process, NULL, TRUE);
nframes = CaptureStackBackTrace(0, SIZE, stack, NULL);
symbolinfo = MEM_callocN(sizeof(SYMBOL_INFO) + MAXSYMBOL * sizeof(char), "crash Symbol table");
symbolinfo->MaxNameLen = MAXSYMBOL - 1;
symbolinfo->SizeOfStruct = sizeof(SYMBOL_INFO);
for (i = 0; i < nframes; i++) {
SymFromAddr(process, (DWORD64)(stack[i]), 0, symbolinfo);
fprintf(fp, "%u: %s - 0x%0X\n", nframes - i - 1, symbolinfo->Name, symbolinfo->Address);
}
MEM_freeN(symbolinfo);
#undef MAXSYMBOL
#undef SIZE
#else
fprintf(fp, "Crash backtrace not supported on release builds\n");
#endif /* NDEBUG */
#else /* _MSC_VER */
/* ------------------ */
/* non msvc/osx/linux */
(void)fp;
#endif
}
/* end BLI_system_backtrace */
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