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Use free followed by malloc instead of realloc when increasing raw buffer

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At this point we don't need to preserve the data inside the buffer.
Using free followed by malloc reduces fragmentation for some heap implementations.
This commit is contained in:
Ivan Grokhotkov
2016-02-26 16:09:47 +03:00
parent 43a90bcf35
commit 28869ea94b
1 changed files with 10 additions and 6 deletions
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16
ssl/tls1.c
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@ -1402,15 +1402,19 @@ error:
void increase_bm_data_size(SSL *ssl)
{
uint8_t* pr = (uint8_t*) realloc(ssl->bm_all_data, RT_MAX_PLAIN_LENGTH + RT_EXTRA);
if (pr) {
ssl->max_plain_length = RT_MAX_PLAIN_LENGTH;
ssl->bm_all_data = pr;
ssl->bm_data = pr + BM_RECORD_OFFSET;
if (ssl->max_plain_length == RT_MAX_PLAIN_LENGTH) {
return;
}
else {
free(ssl->bm_all_data);
ssl->bm_data = 0;
ssl->bm_all_data = malloc(RT_MAX_PLAIN_LENGTH + RT_EXTRA);
if (!ssl->bm_all_data) {
printf("failed to grow plain buffer\r\n");
return;
}
ssl->max_plain_length = RT_MAX_PLAIN_LENGTH;
ssl->bm_data = ssl->bm_all_data + BM_RECORD_OFFSET;
}
/**