Defines | |
| #define | mdb_func_ "<mdb_unknown>" |
| #define | Z "z" |
| #define | MDB_PIDLOCK 1 |
| #define | LOCK_MUTEX_R(env) pthread_mutex_lock(&(env)->me_txns->mti_mutex) |
| #define | UNLOCK_MUTEX_R(env) pthread_mutex_unlock(&(env)->me_txns->mti_mutex) |
| #define | LOCK_MUTEX_W(env) pthread_mutex_lock(&(env)->me_txns->mti_wmutex) |
| #define | UNLOCK_MUTEX_W(env) pthread_mutex_unlock(&(env)->me_txns->mti_wmutex) |
| #define | ErrCode() errno |
| #define | HANDLE int |
| #define | INVALID_HANDLE_VALUE (-1) |
| #define | GET_PAGESIZE(x) ((x) = sysconf(_SC_PAGE_SIZE)) |
| #define | MNAME_LEN (sizeof(pthread_mutex_t)) |
A bunch of macros to minimize the amount of platform-specific ifdefs needed throughout the rest of the code. When the features this library needs are similar enough to POSIX to be hidden in a one-or-two line replacement, this macro approach is used.
| #define mdb_func_ "<mdb_unknown>" |
Wrapper around __func__, which is a C99 feature
| #define Z "z" |
printf format modifier for size_t
| #define MDB_PIDLOCK 1 |
For MDB_LOCK_FORMAT: True if readers take a pid lock in the lockfile
| #define LOCK_MUTEX_R | ( | env | ) | pthread_mutex_lock(&(env)->me_txns->mti_mutex) |
Lock the reader mutex.
| #define UNLOCK_MUTEX_R | ( | env | ) | pthread_mutex_unlock(&(env)->me_txns->mti_mutex) |
Unlock the reader mutex.
| #define LOCK_MUTEX_W | ( | env | ) | pthread_mutex_lock(&(env)->me_txns->mti_wmutex) |
Lock the writer mutex. Only a single write transaction is allowed at a time. Other writers will block waiting for this mutex.
| #define UNLOCK_MUTEX_W | ( | env | ) | pthread_mutex_unlock(&(env)->me_txns->mti_wmutex) |
Unlock the writer mutex.
| #define ErrCode | ( | ) | errno |
Get the error code for the last failed system function.
| #define HANDLE int |
An abstraction for a file handle. On POSIX systems file handles are small integers. On Windows they're opaque pointers.
| #define INVALID_HANDLE_VALUE (-1) |
A value for an invalid file handle. Mainly used to initialize file variables and signify that they are unused.
| #define GET_PAGESIZE | ( | x | ) | ((x) = sysconf(_SC_PAGE_SIZE)) |
Get the size of a memory page for the system. This is the basic size that the platform's memory manager uses, and is fundamental to the use of memory-mapped files.
1.6.1
