Commit 2a47d042 authored by John Esmet's avatar John Esmet Committed by Yoni Fogel

move some non production code to bradley's home


git-svn-id: file:///svn/toku/tokudb@44079 c7de825b-a66e-492c-adef-691d508d4ae1
parent 269730fa
CFLAGS=-W -Wall -Werror -ggdb3 -O3 -std=c99
#CPPFLAGS=-I../xz-5.0.3/src/liblzma/api
LDLIBS=-llzma
#LDFLAGS=-L../xz-5.0.3/src/liblzma/.libs -Wl,-rpath,../xz-5.0.3/src/liblzma/.libs
default: lzma-compress lzma-compress-mt
lzma-compress-mt: CFLAGS+=-pthread
clean:
rm -f lzma-compress lzma-compress-mt
/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: expandtab:ts=8:sw=4:softtabstop=4:
/* An example of using lzma. Written by Bradley Tue Mar 6 2012 */
/* Read stdin in blocks of size up to 1MB, compress it and write it to stdout.
* Each output block is preceeded by two 4-byte numbers that says how big the compressed block is and how big the uncompressed block is.
*/
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <sys/time.h>
#include <lzma.h>
float tdiff (struct timeval *start, struct timeval *end) {
return (end->tv_sec-start->tv_sec) +1e-6*(end->tv_usec - start->tv_usec);
}
int main (int argc, char *argv[] __attribute__((__unused__)))
{
assert(argc==1);
const size_t in_max = 1024*1024;
uint8_t *in_data = malloc(in_max);
uint8_t *reconstituted = malloc(in_max);
assert(in_data);
size_t out_current = 0;
uint8_t *out_data = NULL;
double compress_time = 0, decompress_time = 0;
while (1) {
size_t in_size = fread(in_data, 1, in_max, stdin);
if (in_size==0) {
assert(feof(stdin));
break;
}
printf("Got %ld bytes\n", in_size);
size_t out_bound = lzma_stream_buffer_bound(in_size);
printf("out bound = %ld\n", out_bound);
if (out_current < out_bound) {
out_data = realloc(out_data, out_bound);
out_current = out_bound;
}
size_t compressed_size;
{
struct timeval tstart,tend;
gettimeofday(&tstart, NULL);
size_t out_pos = 0;
lzma_ret r = lzma_easy_buffer_encode(6, LZMA_CHECK_CRC32, NULL,
in_data, in_size,
out_data, &out_pos, out_current);
gettimeofday(&tend, NULL);
compress_time += tdiff(&tstart, &tend);
printf("r=%d\n", r);
assert(r==LZMA_OK);
printf("out size = %ld\n", out_pos);
compressed_size = out_pos;
}
{
struct timeval tstart,tend;
gettimeofday(&tstart, NULL);
uint64_t memlimit = UINT64_MAX;
size_t compressed_pos = 0;
size_t reconstituted_pos = 0;
lzma_ret r = lzma_stream_buffer_decode(&memlimit,
0,
NULL,
out_data,
&compressed_pos, compressed_size,
reconstituted, &reconstituted_pos, in_max);
gettimeofday(&tend, NULL);
decompress_time += tdiff(&tstart, &tend);
printf("r=%d\n", r);
assert(r==LZMA_OK);
}
}
printf("Compression time = %9.6fs\n", compress_time);
printf("Decmpression time = %9.6fs\n", decompress_time);
free(in_data);
free(out_data);
free(reconstituted);
return 0;
}
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