ckolivas/lrzip
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Fixups to nice handling. Users can't normally lower niceness.

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This commit is contained in:
Peter Hyman 2019-11-26 04:35:26 -06:00
parent 02a7bdc6c4
commit 9b20563ef5
3 changed files with 26 additions and 12 deletions
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3
lrzip_core.h
View file

@ -47,4 +47,7 @@ extern void zpaq_compress(uchar *c_buf, i64 *c_len, uchar *s_buf, i64 s_len, int
FILE *msgout, bool progress, long thread);
extern void zpaq_decompress(uchar *s_buf, i64 *d_len, uchar *c_buf, i64 c_len,
FILE *msgout, bool progress, long thread);
static int current_priority;
#endif

22
main.c
View file

@ -440,8 +440,8 @@ int main(int argc, char *argv[])
break;
case 'N':
control->nice_val = atoi(optarg);
if (control->nice_val < -20 || control->nice_val > 19)
failure("Invalid nice value (must be -20..19)\n");
if (control->nice_val < PRIO_MIN || control->nice_val > PRIO_MAX)
failure("Invalid nice value (must be %d...%d)\n", PRIO_MIN, PRIO_MAX);
break;
case 'o':
if (control->outdir)
@ -565,12 +565,20 @@ int main(int argc, char *argv[])
/* Set the main nice value to half that of the backend threads since
* the rzip stage is usually the rate limiting step */
if (control->nice_val > 0 && !NO_COMPRESS) {
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val / 2) == -1))
print_err("Warning, unable to set nice value\n");
current_priority = getpriority(PRIO_PROCESS, 0);
if (!NO_COMPRESS) {
/* If niceness can't be set. just reset process priority */
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val/2) == -1)) {
print_err("Warning, unable to set nice value %d...Resetting to %d\n",
control->nice_val, current_priority);
setpriority(PRIO_PROCESS, 0, (control->nice_val=current_priority));
}
} else {
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val) == -1))
print_err("Warning, unable to set nice value\n");
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val) == -1)) {
print_err("Warning, unable to set nice value %d...Resetting to %d\n",
control->nice_val, current_priority);
setpriority(PRIO_PROCESS, 0, (control->nice_val=current_priority));
}
}
/* One extra iteration for the case of no parameters means we will default to stdin/out */

13
stream.c
View file

@ -1276,9 +1276,10 @@ static void *compthread(void *data)
cti = &cthread[i];
ctis = cti->sinfo;
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val) == -1))
print_err("Warning, unable to set nice value on thread\n");
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val) == -1)) {
print_err("Warning, unable to set thread nice value %d...Resetting to %d\n", control->nice_val, current_priority);
setpriority(PRIO_PROCESS, 0, (control->nice_val=current_priority));
}
cti->c_type = CTYPE_NONE;
cti->c_len = cti->s_len;
@ -1512,8 +1513,10 @@ static void *ucompthread(void *data)
dealloc(data);
uci = &ucthread[i];
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val) == -1))
print_err("Warning, unable to set nice value on thread\n");
if (unlikely(setpriority(PRIO_PROCESS, 0, control->nice_val) == -1)) {
print_err("Warning, unable to set thread nice value %d...Resetting to %d\n", control->nice_val, current_priority);
setpriority(PRIO_PROCESS, 0, (control->nice_val=current_priority));
}
retry:
if (uci->c_type != CTYPE_NONE) {