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[lonetix/sys] Only use posix_fadvise() and fdatasync() on Linux. 

Some platforms don't offer these functions (e.g. Apple).
This commit is contained in:
Lorenzo Cogotti 2021-11-06 00:12:07 +01:00
parent 207924beac
commit f214c5e42d
1 changed files with 14 additions and 2 deletions
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16
lonetix/sys/fs_unix.c
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@ -73,7 +73,8 @@ Fildes Sys_Fopen(const char *path, FopenMode mode, unsigned flags)
Sys_SetErrStat(errno, "open()/mkstemp()"); Sys_SetErrStat(errno, "open()/mkstemp()");
// Apply hints // Apply hints (if possible)
#ifdef __linux__
if (fd >= 0) { if (fd >= 0) {
if (flags & FH_SEQ) if (flags & FH_SEQ)
posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL); posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL);
@ -82,7 +83,10 @@ Fildes Sys_Fopen(const char *path, FopenMode mode, unsigned flags)
if (flags & FH_NOREUSE) if (flags & FH_NOREUSE)
posix_fadvise(fd, 0, 0, POSIX_FADV_NOREUSE); posix_fadvise(fd, 0, 0, POSIX_FADV_NOREUSE);
} }
return fd; #endif
USED(flags);
return fd;
} }
Sint64 Sys_Fread(Fildes fd, void *buf, size_t nbytes) Sint64 Sys_Fread(Fildes fd, void *buf, size_t nbytes)
@ -173,10 +177,18 @@ Judgement Sys_Fsync(Fildes fd, Boolean fullSync)
{ {
errno = 0; errno = 0;
#ifdef __linux__
// Take advantage of fdatasync() if possible
if (fullSync) if (fullSync)
fsync(fd); fsync(fd);
else else
fdatasync(fd); fdatasync(fd);
#else
// Play it safe and portable
USED(fullSync);
fsync(fd);
#endif
return Sys_SetErrStat(errno, "fsync()/fdatasync()"); return Sys_SetErrStat(errno, "fsync()/fdatasync()");
} }