diff options
Diffstat (limited to 'Src/compat.c')
| -rw-r--r-- | Src/compat.c | 112 |
1 files changed, 64 insertions, 48 deletions
diff --git a/Src/compat.c b/Src/compat.c index 817bb4aaf..918d98e69 100644 --- a/Src/compat.c +++ b/Src/compat.c @@ -136,7 +136,19 @@ zgettime_monotonic_if_available(struct timespec *ts) #if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC) struct timespec dts; + +/* + * On at least some versions of macOS it appears that CLOCK_MONOTONIC is not + * actually monotonic -- there are reports that it can go backwards. + * CLOCK_MONOTONIC_RAW does not have this problem. On top of that, it is faster + * to read and it has nanosecond precision. We could use it on other systems + * too, but on Linux at least it seems that CLOCK_MONOTONIC is preferred + */ +#if defined(__APPLE__) && defined(CLOCK_MONOTONIC_RAW) + if (clock_gettime(CLOCK_MONOTONIC_RAW, &dts) < 0) { +#else if (clock_gettime(CLOCK_MONOTONIC, &dts) < 0) { +#endif zwarn("unable to retrieve CLOCK_MONOTONIC time: %e", errno); ret--; } else { @@ -342,36 +354,69 @@ zopenmax(void) mod_export char * zgetdir(struct dirsav *d) { - char nbuf[PATH_MAX+3]; char *buf; +#if defined(HAVE_GETCWD) || defined(__CYGWIN__) + char *cwdbuf; +#endif +#if defined(USE_GETCWD) || defined(__CYGWIN__) +#ifdef GETCWD_CALLS_MALLOC + if ((cwdbuf = getcwd(NULL, 0))) { + buf = dupstring(cwdbuf); + free(cwdbuf); + } else + buf = NULL; +#else + cwdbuf = zalloc(PATH_MAX+1); + if ((buf = getcwd(cwdbuf, PATH_MAX))) + buf = dupstring(buf); + zfree(cwdbuf, PATH_MAX+1); +#endif /* GETCWD_CALLS_MALLOC */ + if (d && buf) + return d->dirname = ztrdup(buf); + else + return buf; +#else /* !USE_GETCWD && !__CYGWIN__ */ int bufsiz, pos; - struct stat sbuf; - ino_t pino; - dev_t pdev; -#if !defined(__CYGWIN__) && !defined(USE_GETCWD) + char nbuf[PATH_MAX+3]; struct dirent *de; DIR *dir; - dev_t dev; - ino_t ino; + struct stat sbuf; + ino_t pino, ino; + dev_t pdev, dev; int len; -#endif + strcpy(nbuf, "../"); + if (stat(".", &sbuf) == 0) { + /* Record the initial inode and device */ + pino = sbuf.st_ino; + pdev = sbuf.st_dev; + if (d) + d->ino = pino, d->dev = pdev; + } +#ifdef HAVE_GETCWD + else { +#ifdef GETCWD_CALLS_MALLOC + if ((cwdbuf = getcwd(NULL, 0))) { + buf = dupstring(cwdbuf); + free(cwdbuf); + } else + buf = NULL; +#else + cwdbuf = zalloc(PATH_MAX+1); + if ((buf = getcwd(cwdbuf, PATH_MAX))) + buf = dupstring(buf); + zfree(cwdbuf, PATH_MAX+1); +#endif /* GETCWD_CALLS_MALLOC */ + return buf; /* NULL when stat() and getcwd() both failed */ + } +#endif + /* stat() succeeded */ buf = zhalloc(bufsiz = PATH_MAX+1); pos = bufsiz - 1; buf[pos] = '\0'; - strcpy(nbuf, "../"); - if (stat(".", &sbuf) < 0) { - return NULL; - } - /* Record the initial inode and device */ - pino = sbuf.st_ino; - pdev = sbuf.st_dev; - if (d) - d->ino = pino, d->dev = pdev; -#if !defined(__CYGWIN__) && !defined(USE_GETCWD) #ifdef HAVE_FCHDIR - else + if (!d) #endif holdintr(); @@ -487,18 +532,6 @@ zgetdir(struct dirsav *d) zchdir(buf + pos + 1); noholdintr(); -#else /* __CYGWIN__, USE_GETCWD cases */ - - if (!getcwd(buf, bufsiz)) { - if (d) { - return NULL; - } - } else { - if (d) { - return d->dirname = ztrdup(buf); - } - return buf; - } #endif /* @@ -526,23 +559,6 @@ mod_export char * zgetcwd(void) { char *ret = zgetdir(NULL); -#ifdef HAVE_GETCWD - if (!ret) { -#ifdef GETCWD_CALLS_MALLOC - char *cwd = getcwd(NULL, 0); - if (cwd) { - ret = dupstring(cwd); - free(cwd); - } -#else - char *cwdbuf = zalloc(PATH_MAX+1); - ret = getcwd(cwdbuf, PATH_MAX); - if (ret) - ret = dupstring(ret); - zfree(cwdbuf, PATH_MAX+1); -#endif /* GETCWD_CALLS_MALLOC */ - } -#endif /* HAVE_GETCWD */ if (!ret) ret = unmeta(pwd); if (!ret || *ret == '\0') |