diff options
Diffstat (limited to 'src/examples/memslice-bench/memslice-bench.c')
| -rw-r--r-- | src/examples/memslice-bench/memslice-bench.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/examples/memslice-bench/memslice-bench.c b/src/examples/memslice-bench/memslice-bench.c new file mode 100644 index 0000000..3fb05d5 --- /dev/null +++ b/src/examples/memslice-bench/memslice-bench.c @@ -0,0 +1,117 @@ +/* + * Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice is present in all copies. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#define timersub(tvp, uvp, vvp) \ + do { \ + (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ + (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ + if ((vvp)->tv_usec < 0) { \ + (vvp)->tv_sec--; \ + (vvp)->tv_usec += 1000000; \ + } \ + } while (0) + +#include <mowgli.h> + +mowgli_allocation_policy_t *memslice; +mowgli_allocation_policy_t *sysmalloc; + +int +main(int argc, char *argv[]) +{ + size_t i; + size_t objects; + size_t *obj_sizes; + void **ptrs; + struct timeval ts, te; + + mowgli_thread_set_policy(MOWGLI_THREAD_POLICY_DISABLED); + + objects = 128000; + ptrs = mowgli_alloc_array(sizeof(void *), objects); + obj_sizes = mowgli_alloc_array(sizeof(size_t), objects); + + memslice = mowgli_allocation_policy_lookup("memslice"); + sysmalloc = mowgli_allocation_policy_lookup("malloc"); + + if (sysmalloc == NULL) + { + printf("Couldn't find a sysmalloc component which implements contract 'mowgli.core.allocation_policy' :(\n"); + return EXIT_FAILURE; + } + + if (memslice == NULL) + { + printf("Couldn't find a memslice component which implements contract 'mowgli.core.allocation_policy' :(\n"); + return EXIT_FAILURE; + } + + printf("Going to allocate %zu objects of random sizes < 256\n", objects); + + printf("Assigning sizes...\n"); + for (i = 0; i < objects; i++) { + obj_sizes[i] = rand() % 256; + } + printf("Done! Lets benchmark.\n"); + + /* allocate using sysmalloc */ + gettimeofday(&ts, NULL); + for (i = 0; i < objects; i++) { + ptrs[i] = mowgli_alloc_using_policy(sysmalloc, obj_sizes[i]); + } + gettimeofday(&te, NULL); + timersub(&te, &ts, &ts); + + printf("sysmalloc alloc time: %ld usec\n", + ts.tv_sec * 1000000L + ts.tv_usec); + + gettimeofday(&ts, NULL); + for (i = 0; i < objects; i++) { + mowgli_free(ptrs[i]); + } + gettimeofday(&te, NULL); + timersub(&te, &ts, &ts); + + printf("sysmalloc free time: %ld usec\n", + ts.tv_sec * 1000000L + ts.tv_usec); + + /* allocate using memslice */ + gettimeofday(&ts, NULL); + for (i = 0; i < objects; i++) { + ptrs[i] = mowgli_alloc_using_policy(memslice, obj_sizes[i]); + } + gettimeofday(&te, NULL); + timersub(&te, &ts, &ts); + + printf("memslice alloc time: %ld usec\n", + ts.tv_sec * 1000000L + ts.tv_usec); + + gettimeofday(&ts, NULL); + for (i = 0; i < objects; i++) { + mowgli_free(ptrs[i]); + } + gettimeofday(&te, NULL); + timersub(&te, &ts, &ts); + + printf("memslice free time: %ld usec\n", + ts.tv_sec * 1000000L + ts.tv_usec); + + return EXIT_SUCCESS; +} |