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thier3: added mlock/munlock for array and its temporary (you can turn this off)

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Richard Thier 2025-10-01 04:36:18 +02:00
parent ccdf991824
commit d43b55f065
3 changed files with 20 additions and 7 deletions
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13
thiersort3.h
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@ -3,6 +3,10 @@
#include <stdint.h> #include <stdint.h>
/* A non-implace tricky float-hackz based bucket sort variant. Uses threepass_xbit and removes some compies! */ /* A non-implace tricky float-hackz based bucket sort variant. Uses threepass_xbit and removes some compies! */
#ifndef NO_MLOCK
#include <sys/mman.h> // mlock & munlock
#endif // !NO_MLOCK
/* Disables extra 1-bit split processing before threepass_xb */ /* Disables extra 1-bit split processing before threepass_xb */
#define NO_EXTRA_BIT /* I measure extra split to be slightly slower because overhead - despite less cache misses */ #define NO_EXTRA_BIT /* I measure extra split to be slightly slower because overhead - despite less cache misses */
@ -66,6 +70,11 @@ static inline void thiersort3(uint32_t *arr, uint32_t *temparr, int n) {
return; return;
} }
#ifndef NO_MLOCK
mlock(arr, n * sizeof(uint32_t));
mlock(temparr, n * sizeof(uint32_t));
#endif // !NO_MLOCK
/* Count */ /* Count */
#pragma GCC unroll 64 #pragma GCC unroll 64
for(int i = 0; i < 256; ++i) { for(int i = 0; i < 256; ++i) {
@ -179,6 +188,10 @@ static inline void thiersort3(uint32_t *arr, uint32_t *temparr, int n) {
} }
} }
#endif /* NO_EXTRA_BIT */ #endif /* NO_EXTRA_BIT */
#ifndef NO_MLOCK
munlock(arr, n * sizeof(uint32_t));
munlock(temparr, n * sizeof(uint32_t));
#endif // !NO_MLOCK
} }
#endif /* THIER_SORT3_H */ #endif /* THIER_SORT3_H */

4
ypsu.cpp
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@ -895,8 +895,8 @@ int main(int argc, char **argv) {
printf("Sorting %d elements:\n\n", n); printf("Sorting %d elements:\n\n", n);
// Uncomment this for profiling and alg! // Uncomment this for profiling and alg!
measure_single(n); //measure_single(n);
return 0; //return 0;
for (auto inputtype : inputtypes) { for (auto inputtype : inputtypes) {
printf("%10s", inputtype.c_str()); printf("%10s", inputtype.c_str());