Mercurial > sdl-ios-xcode

comparison src/cpuinfo/SDL_cpuinfo.c @ 5122:b3f075368b1f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added API function to get CPU cache line size.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 27 Jan 2011 20:46:45 -0800
parents 427998ff3bcf
children 6a65c1fc07af
comparison
equal deleted inserted replaced
5121:edd0f0617be4 5122:b3f075368b1f
302 } 302 }
303 303
304 static int SDL_CPUCount = 0; 304 static int SDL_CPUCount = 0;
305 305
306 int 306 int
307 SDL_GetCPUCount() 307 SDL_GetCPUCount(void)
308 { 308 {
309 if (!SDL_CPUCount) { 309 if (!SDL_CPUCount) {
310 #if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN) 310 #if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
311 if (SDL_CPUCount <= 0) { 311 if (SDL_CPUCount <= 0) {
312 SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN); 312 SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN);
333 return SDL_CPUCount; 333 return SDL_CPUCount;
334 } 334 }
335 335
336 /* Oh, such a sweet sweet trick, just not very useful. :) */ 336 /* Oh, such a sweet sweet trick, just not very useful. :) */
337 static const char * 337 static const char *
338 SDL_GetCPUType() 338 SDL_GetCPUType(void)
339 { 339 {
340 static char SDL_CPUType[13]; 340 static char SDL_CPUType[13];
341 341
342 if (!SDL_CPUType[0]) { 342 if (!SDL_CPUType[0]) {
343 int i = 0; 343 int i = 0;
364 } 364 }
365 return SDL_CPUType; 365 return SDL_CPUType;
366 } 366 }
367 367
368 static const char * 368 static const char *
369 SDL_GetCPUName() 369 SDL_GetCPUName(void)
370 { 370 {
371 static char SDL_CPUName[48]; 371 static char SDL_CPUName[48];
372 372
373 if (!SDL_CPUName[0]) { 373 if (!SDL_CPUName[0]) {
374 int i = 0; 374 int i = 0;
435 } 435 }
436 } 436 }
437 return SDL_CPUName; 437 return SDL_CPUName;
438 } 438 }
439 439
440 static int 440 int
441 SDL_GetCPUCacheLineSize() 441 SDL_GetCPUCacheLineSize(void)
442 { 442 {
443 const char *cpuType = SDL_GetCPUType(); 443 const char *cpuType = SDL_GetCPUType();
444 444
445 if (SDL_strcmp(cpuType, "GenuineIntel") == 0) { 445 if (SDL_strcmp(cpuType, "GenuineIntel") == 0) {
446 int a, b, c, d; 446 int a, b, c, d;