diff options
Diffstat (limited to 'mysys/mysys_priv.h')
| -rw-r--r-- | mysys/mysys_priv.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/mysys/mysys_priv.h b/mysys/mysys_priv.h index 0fa6a4c553f..57e734321fa 100644 --- a/mysys/mysys_priv.h +++ b/mysys/mysys_priv.h @@ -176,6 +176,45 @@ extern int my_win_fsync(File fd); extern File my_win_dup(File fd); extern File my_win_sopen(const char *path, int oflag, int shflag, int perm); extern File my_open_osfhandle(HANDLE handle, int oflag); + + +/* + The following constants are related to retries when file operation fails with + ERROR_FILE_SHARING_VIOLATION +*/ +#define FILE_SHARING_VIOLATION_RETRIES 50 +#define FILE_SHARING_VIOLATION_DELAY_MS 10 + + +/* DBUG injecting of ERROR_FILE_SHARING_VIOLATION */ +#ifndef DBUG_OFF +/* Open file, without sharing. if specific DBUG keyword is set */ +#define DBUG_INJECT_FILE_SHARING_VIOLATION(filename) \ + FILE *fp= NULL; \ + do \ + { \ + DBUG_EXECUTE_IF("file_sharing_violation", \ + fp= _fsopen(filename, "r", _SH_DENYRW);); \ + } while (0) + +/* Close the file that causes ERROR_FILE_SHARING_VIOLATION.*/ +#define DBUG_CLEAR_FILE_SHARING_VIOLATION() \ + do \ + { \ + if (fp) \ + { \ + DWORD tmp_err= GetLastError(); \ + fclose(fp); \ + SetLastError(tmp_err); \ + fp= NULL; \ + } \ + } while (0) + +#else +#define DBUG_INJECT_FILE_SHARING_VIOLATION(filename) do {} while (0) +#define DBUG_CLEAR_FILE_SHARING_VIOLATION() do {} while (0) +#endif + #endif C_MODE_END |