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69 lines
1.7 KiB
PHP
69 lines
1.7 KiB
PHP
<?php
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namespace Safe;
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use Safe\Exceptions\ShmopException;
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/**
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* shmop_delete is used to delete a shared memory block.
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*
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* @param resource $shmid The shared memory block resource created by
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* shmop_open
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* @throws ShmopException
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*
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*/
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function shmop_delete($shmid): void
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{
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error_clear_last();
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$result = \shmop_delete($shmid);
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if ($result === false) {
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throw ShmopException::createFromPhpError();
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}
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}
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/**
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* shmop_read will read a string from shared memory block.
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*
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* @param resource $shmid The shared memory block identifier created by
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* shmop_open
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* @param int $start Offset from which to start reading
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* @param int $count The number of bytes to read.
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* 0 reads shmop_size($shmid) - $start bytes.
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* @return string Returns the data.
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* @throws ShmopException
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*
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*/
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function shmop_read($shmid, int $start, int $count): string
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{
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error_clear_last();
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$result = \shmop_read($shmid, $start, $count);
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if ($result === false) {
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throw ShmopException::createFromPhpError();
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}
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return $result;
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}
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/**
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* shmop_write will write a string into shared memory block.
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*
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* @param resource $shmid The shared memory block identifier created by
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* shmop_open
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* @param string $data A string to write into shared memory block
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* @param int $offset Specifies where to start writing data inside the shared memory
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* segment.
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* @return int The size of the written data.
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* @throws ShmopException
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*
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*/
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function shmop_write($shmid, string $data, int $offset): int
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{
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error_clear_last();
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$result = \shmop_write($shmid, $data, $offset);
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if ($result === false) {
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throw ShmopException::createFromPhpError();
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}
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return $result;
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}
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