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Add warnings for low thread and memory usage.

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This commit is contained in:
Con Kolivas 2022-03-09 08:53:37 +11:00
parent 80f7d91044
commit cdec0951d7
1 changed files with 13 additions and 4 deletions
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17
stream.c
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@ -937,9 +937,10 @@ bool close_streamout_threads(rzip_control *control)
void *open_stream_out(rzip_control *control, int f, unsigned int n, i64 chunk_limit, char cbytes)
{
struct stream_info *sinfo;
unsigned int i, testbufs;
bool threadlimit = false;
i64 testsize, limit;
uchar *testmalloc;
unsigned int i, testbufs;
sinfo = calloc(sizeof(struct stream_info), 1);
if (unlikely(!sinfo))
@ -975,20 +976,28 @@ void *open_stream_out(rzip_control *control, int f, unsigned int n, i64 chunk_li
/* If we don't have enough ram for the number of threads, decrease the
* number of threads till we do, or only have one thread. */
while (limit < STREAM_BUFSIZE && limit < chunk_limit) {
if (control->threads > 1)
if (control->threads > 1) {
--control->threads;
else
threadlimit = true;
} else
break;
limit = (control->usable_ram - (control->overhead * control->threads)) / testbufs;
limit = MIN(limit, chunk_limit);
}
if (threadlimit) {
print_output("Minimising number of threads to %d to limit memory usage\n",
control->threads);
}
if (BITS32) {
limit = MIN(limit, one_g);
if (limit + (control->overhead * control->threads) > one_g)
limit = one_g - (control->overhead * control->threads);
}
/* Use a nominal minimum size should we fail all previous shrinking */
limit = MAX(limit, STREAM_BUFSIZE);
if (limit < STREAM_BUFSIZE) {
limit = MAX(limit, STREAM_BUFSIZE);
print_output("Warning, low memory for chosen compression settings\n");
}
limit = MIN(limit, chunk_limit);
retest_malloc:
testsize = limit + (control->overhead * control->threads);