Provided by: lmdb-doc_0.9.10-1_all 

NAME
Windows Compatibility Macros - Macros #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))
Detailed Description
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.
Macro Definition Documentation
#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.
Author
Generated automatically by Doxygen for MDB from the source code.