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readahead: cleanups

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- check for OOM
- no need to use floats and round()
This commit is contained in:
Auke Kok 2013-03-26 11:13:47 -07:00
parent 94243ef299
commit b0640287f7
2 changed files with 15 additions and 7 deletions
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2
Makefile.am
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@ -2956,7 +2956,7 @@ systemd_readahead_SOURCES = \
systemd_readahead_LDADD = \
libsystemd-shared.la \
libsystemd-daemon.la \
libudev.la -lm
libudev.la
dist_doc_DATA += \
src/readahead/sd-readahead.c \

20
src/readahead/readahead-collect.c
View File

@ -68,7 +68,7 @@
*/
static ReadaheadShared *shared = NULL;
static struct timespec starttime;
static usec_t starttime;
/* Avoid collisions with the NULL pointer */
#define SECTOR_TO_PTR(s) ULONG_TO_PTR((s)+1)
@ -260,7 +260,7 @@ static int collect(const char *root) {
goto finish;
}
clock_gettime(CLOCK_MONOTONIC, &starttime);
starttime = now(CLOCK_MONOTONIC);
/* If there's no pack file yet we lower the kernel readahead
* so that mincore() is accurate. If there is a pack file
@ -459,19 +459,27 @@ static int collect(const char *root) {
free(p);
else {
unsigned long ul;
struct timespec ts;
usec_t entrytime;
struct item *entry;
entry = new0(struct item, 1);
if (!entry) {
r = log_oom();
goto finish;
}
ul = fd_first_block(m->fd);
clock_gettime(CLOCK_MONOTONIC, &ts);
entrytime = now(CLOCK_MONOTONIC);
entry->block = ul;
entry->path = strdup(p);
entry->bin = round((ts.tv_sec - starttime.tv_sec +
((ts.tv_nsec - starttime.tv_nsec) / 1000000000.0)) / 2.0);
if (!entry->path) {
free(entry);
r = log_oom();
goto finish;
}
entry->bin = (entrytime - starttime) / 2000000;
if ((k = hashmap_put(files, p, entry)) < 0) {
log_warning("set_put() failed: %s", strerror(-k));