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igzip: Increase overestimate of compressed data size in igzip_perf

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Change-Id: I16adcd817737f71fc59dac585c65c73eb3397d99
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
This commit is contained in:
Roy Oursler 2018-10-12 14:52:58 -07:00
parent e4bfb4d22e
commit 2458a651b7
1 changed files with 17 additions and 1 deletions
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18
igzip/igzip_perf.c
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@ -48,6 +48,11 @@
#define COMPRESSION_QUEUE_LIMIT 32
#define UNSET -1
/* Limit output buffer size to 2 Gigabytes. Since stream->avail_out is a
* uint32_t and there is no logic for handling an overflowed output buffer in
* the perf test, this define must be less then 4 Gigabytes */
#define MAX_COMPRESS_BUF_SIZE (1 << 31)
int level_size_buf[10] = {
#ifdef ISAL_DEF_LVL0_DEFAULT
ISAL_DEF_LVL0_DEFAULT,
@ -482,6 +487,7 @@ int main(int argc, char *argv[])
unsigned char *compressbuf, *decompbuf, *filebuf;
int i, c, ret = 0;
uint64_t decompbuf_size, compressbuf_size;
uint64_t block_count;
struct compress_strategy compression_queue[COMPRESSION_QUEUE_LIMIT];
@ -635,12 +641,22 @@ int main(int argc, char *argv[])
exit(0);
}
compressbuf_size = 2 * info.file_size;
block_count = 1;
if (info.flush_type > 0)
block_count = (info.file_size + info.inblock_size - 1) / info.inblock_size;
/* Way overestimate likely compressed size to handle bad type 0 and
* small block_size case */
compressbuf_size = block_count * ISAL_DEF_MAX_HDR_SIZE + 2 * info.file_size;
if (compressbuf_size >= MAX_COMPRESS_BUF_SIZE)
compressbuf_size = MAX_COMPRESS_BUF_SIZE;
compressbuf = malloc(compressbuf_size);
if (compressbuf == NULL) {
fprintf(stderr, "Can't allocate input buffer memory\n");
exit(0);
}
decompbuf = malloc(decompbuf_size);
if (decompbuf == NULL) {
fprintf(stderr, "Can't allocate output buffer memory\n");