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| author | Simon Rettberg | 2018-06-25 16:09:15 +0200 |
|---|---|---|
| committer | Simon Rettberg | 2018-06-25 16:09:15 +0200 |
| commit | c73deeb2903831b63025f9d2f38dc01e93346d1e (patch) | |
| tree | 7717940567465232ea7e9a19b0ab577983ac2e6b /src/types.h | |
| parent | [SERVER] Try to re-open cacheFd if writing fails (diff) | |
| download | dnbd3-c73deeb2903831b63025f9d2f38dc01e93346d1e.tar.gz dnbd3-c73deeb2903831b63025f9d2f38dc01e93346d1e.tar.xz dnbd3-c73deeb2903831b63025f9d2f38dc01e93346d1e.zip | |
[SERVER] Use likely/unlikely in uplink disk writing loop
Diffstat (limited to 'src/types.h')
| -rw-r--r-- | src/types.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/types.h b/src/types.h index fd7bd21..86b3469 100644 --- a/src/types.h +++ b/src/types.h @@ -40,6 +40,14 @@ #error "Please add define for your compiler for UNUSED, or define to nothing for your compiler if not supported" #endif +#if defined(__GNUC__) && __GNUC__ >= 3 +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#else +#define likely(x) (x) +#define unlikely(x) (x) +#endif + #ifdef __linux__ #define HAVE_THREAD_NAMES #define HAVE_FDATASYNC |