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Diffstat (limited to 'ext/shmop/README')
| -rw-r--r-- | ext/shmop/README | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/ext/shmop/README b/ext/shmop/README deleted file mode 100644 index d1cc5abc2b..0000000000 --- a/ext/shmop/README +++ /dev/null @@ -1,69 +0,0 @@ -last update Jan 2, 2002 (hackie@prohost.org/ilia@prohost.org) - -Shared Memory Operations Extension to PHP4 - - While developing a search deamon we needed a php based front end - to communicate the deamon via SHM. PHP already had a shared memory - extention (sysvshm) written by Christian Cartus <cartus@atrior.de>, - unfortunatly this extention was designed with PHP only in mind and - offers high level features which are extremly bothersome for basic SHM - we had in mind. After spending a day trying to reverse engineer and figure - out the format of sysvshm we decided that it would be much easier to - add our own extention to php for simple SHM operations, we were right :)). - -the functions are: - -int shmop_open(int key, string flags, int mode, int size) - - key - the key of/for the shared memory block - flags - 4 flags are avalible - a for read only access (sets SHM_RDONLY) - w for read & write access - c create or open an existing segment (sets IPC_CREATE) - n create a new segment and fail if one already exists under same name (sets IPC_CREATE|IPC_EXCL) - (the n flag is mostly useful for security perpouses, so that you don't end up opening a faked segment - if someone guesses your key) - mode - acsess mode same as for a file (0644) for example - size - size of the block in bytes - - returns an indentifier - - -char shmop_read(int shmid, int start, int count) - - shmid - shmid from which to read - start - offset from which to start reading - count - how many bytes to read - - returns the data read - -int shmop_write(int shmid, string data, int offset) - - shmid - shmid from which to read - data - string to put into shared memory - offset - offset in shm to write from - - returns bytes written - -int shmop_size(int shmid) - - shmid - shmid for which to return the size - - returns the size in bytes of the shm segment - - -int shmop_delete(int shmid) - - marks the segment for deletion, the segment will be deleted when all processes mapping it will detach - - shmid - shmid which to mark for deletion - - returns 1 if all ok, zero on failure - -int shmop_close(int shmid) - - shmid - shmid which to close - - returns zero - - |