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author | 2015-09-04 07:35:06 +0000 | |
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committer | 2015-09-04 07:35:06 +0000 | |
commit | ca6aa8198d2335f8c326c3dd4d26bf5899064214 (patch) | |
tree | 6274a2d971fc0cac0896efe8583927d0190e3d20 /moon-abe/pbc-0.5.14/benchmark/benchmark.c | |
parent | 92fd2dbfb672d7b2b1cdfd5dd5cf89f7716b3e12 (diff) | |
parent | 3baeb11a8fbcfcdbc31976d421f17b85503b3ecd (diff) |
Merge "init attribute-based encryption"
Diffstat (limited to 'moon-abe/pbc-0.5.14/benchmark/benchmark.c')
-rw-r--r-- | moon-abe/pbc-0.5.14/benchmark/benchmark.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/moon-abe/pbc-0.5.14/benchmark/benchmark.c b/moon-abe/pbc-0.5.14/benchmark/benchmark.c new file mode 100644 index 00000000..b80c1554 --- /dev/null +++ b/moon-abe/pbc-0.5.14/benchmark/benchmark.c @@ -0,0 +1,109 @@ +#include <stdint.h> // for intptr_t +#include "pbc.h" +#include "pbc_test.h" + +/* I've heard that sometimes automatic garbage collection can outperform + * manual collection, so I briefly tried using the Boehm-Demers-Weiser GC + * library. Both GMP and PBC support custom memory allocation routines so + * incorporating the GC library is trivial. + * + * Automatic garbage collection appears to slow this program down a little, + * even if only PBC collects automatically. (The case where PBC collects + * manually but GMP collects automatically cannot be achieved with the GC + * library because PBC objects point at GMP objects.) + * + * Perhaps specially-tailored memory allocation routines could shave off + * some time, but one would have to thoroughly analyze PBC and GMP memory usage + * patterns. + * + * Below is the commented-out code that collects garbage for PBC. Of course, + * if you want to use it you must also tell the build system where to find + * gc.h and to link with the GC library. + * + * Also, you may wish to write similar code for GMP (which I unfortunately + * deleted before thinking that it might be useful for others). + * Note GC_MALLOC_ATOMIC may be used for GMP since the mpz_t type does not + * store pointers in the memory it allocates. + * + * The malloc and realloc functions should exit on failure but I didn't + * bother since I was only seeing if GC could speed up this program. + +#include <gc.h> +#include <pbc_utils.h> + +void *gc_alloc(size_t size) { + return GC_MALLOC(size); +} + +void *gc_realloc(void *ptr, size_t size) { + return GC_REALLOC(ptr, size); +} + +void gc_free(void *ptr) { + UNUSED_VAR(ptr); +} + + * The following should be the first two statements in main() + +GC_INIT(); +pbc_set_memory_functions(gc_alloc, gc_realloc, gc_free); + + */ + +int main(int argc, char **argv) { + pairing_t pairing; + element_t x, y, r, r2; + int i, n; + double t0, t1, ttotal, ttotalpp; + pairing_pp_t pp; + + // Cheat for slightly faster times: + // pbc_set_memory_functions(malloc, realloc, free); + + pbc_demo_pairing_init(pairing, argc, argv); + + element_init_G1(x, pairing); + element_init_G2(y, pairing); + element_init_GT(r, pairing); + element_init_GT(r2, pairing); + + n = 10; + ttotal = 0.0; + ttotalpp = 0.0; + for (i=0; i<n; i++) { + element_random(x); + element_random(y); + + pairing_pp_init(pp, x, pairing); + t0 = pbc_get_time(); + pairing_pp_apply(r, y, pp); + t1 = pbc_get_time(); + ttotalpp += t1 - t0; + pairing_pp_clear(pp); + + t0 = pbc_get_time(); + + element_pairing(r2, x, y); + t1 = pbc_get_time(); + ttotal += t1 - t0; + + element_printf("x = %B\n", x); + element_printf("y = %B\n", y); + element_printf("e(x,y) = %B\n", r); + if (element_cmp(r, r2)) { + printf("BUG!\n"); + exit(1); + } + } + printf("average pairing time = %f\n", ttotal / n); + printf("average pairing time (preprocessed) = %f\n", ttotalpp / n); + + element_clear(x); + element_clear(y); + element_clear(r); + element_clear(r2); + + pairing_clear(pairing); + + return 0; +} |