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 universal-python

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benchmark.c

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#include "zlib.h"

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <assert.h>

// don't inline, to be friendly to js engine osr

void __attribute__ ((noinline)) doit(char *buffer, int size, int i) {

static char *buffer2 = NULL;

static char *buffer3 = NULL;

unsigned long maxCompressedSize = compressBound(size);

if (!buffer2) buffer2 = (char*)malloc(maxCompressedSize);

if (!buffer3) buffer3 = (char*)malloc(size);

unsigned long compressedSize = maxCompressedSize;

compress(buffer2, &compressedSize, buffer, size);

if (i == 0) printf("sizes: %d,%d\n", size, compressedSize);

unsigned long decompressedSize = size;

uncompress(buffer3, &decompressedSize, buffer2, compressedSize);

assert(decompressedSize == size);

if (i == 0) assert(strcmp(buffer, buffer3) == 0);

}

int main(int argc, char **argv) {

int size, iters;

int arg = argc > 1 ? argv[1][0] - '0' : 3;

switch(arg) {

case 0: return 0; break;

case 1: size = 100000; iters = 60; break;

case 2: size = 100000; iters = 250; break;

case 3: size = 100000; iters = 500; break;

case 4: size = 100000; iters = 5*500; break;

case 5: size = 100000; iters = 10*500; break;

default: printf("error: %d\\n", arg); return -1;

}

char *buffer = malloc(size);

int i = 0;

int run = 0;

char runChar = 17;

while (i < size) {

if (run > 0) {

run--;

} else {

if ((i & 7) == 0) {

runChar = i & 7;

run = i & 31;

} else {

runChar = (i*i) % 6714;

}

}

buffer[i] = runChar;

i++;

}

for (i = 0; i < iters; i++) {

doit(buffer, size, i);

}

printf("ok.\n");

return 0;

}