diff options
Diffstat (limited to 'benchmarks/bench_loop.c')
| -rw-r--r-- | benchmarks/bench_loop.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/benchmarks/bench_loop.c b/benchmarks/bench_loop.c deleted file mode 100644 index bc15808..0000000 --- a/benchmarks/bench_loop.c +++ /dev/null @@ -1,87 +0,0 @@ -#include <assert.h> -#include <malloc.h> -#include <pthread.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - - -static size_t _rand() { - static __thread size_t seed = 123456789; - size_t a = 1103515245; - size_t c = 12345; - size_t m = 1 << 31; - seed = (a * seed + c) % m; - return seed; -} - -typedef struct ThreadArgs { - double benchmark; - int allocations; - int max_size; -} ThreadArgs; - -static void* malloc_then_write(size_t size) { - void* ptr = malloc(size); - // Write to ptr - /* *((char*)ptr) = '!'; */ - return ptr; -} - -static void read_then_free(void* ptr) { - // Read before free - /* char s __attribute__((unused)) = *((char*)ptr); */ - free(ptr); -} -static void* test_thread_func(void* arg) { - ThreadArgs* args = (ThreadArgs*)arg; - - for(int i = 0; i < args->allocations; i++) { - void* ptr = malloc_then_write((_rand() % args->max_size) + 1); - read_then_free(ptr); - } - return NULL; -} - -int main(int argc, char* argv[]) { - pthread_t* threads; - int num_threads; - struct ThreadArgs thread_args; - - if (argc < 4) { - fprintf(stderr, "Usage: %s <num threads> <num allocations> <max size>\n", argv[0]); - return 1; - } - - num_threads = atoi(argv[1]); - thread_args.allocations = atoi(argv[2]); - thread_args.max_size = atoi(argv[3]); - - threads = (pthread_t*)malloc(num_threads * sizeof(pthread_t)); - - for (int i = 0; i < num_threads; i++) { - if (0 != pthread_create(&threads[i], NULL, test_thread_func, &thread_args)) { - perror("pthread_create"); - return 1; - } - } - - for(int i = 0; i < num_threads; i++) { - if (0 != pthread_join(threads[i], NULL)) { - perror("pthread_join"); - return 1; - } - } - - if (argc == 5) - { - FILE* f = stdout; - if (strcmp(argv[4],"stdout") != 0) - f = fopen(argv[4], "w"); - malloc_info(0, f); - if (strcmp(argv[4],"stdout") != 0) - fclose(f); - } - - return 0; -} |
