X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fpurge.cc;h=4dbe24d05cb090e733f6d1a07d2b197c92d28af3;hb=9973d386ac8476cd09cc4d9cf7bd2234a42740c7;hp=07cd135f56c939281ae786bdd32372ea97e4b985;hpb=67456d74f5bd4f354a360d70da503dc58cbe5971;p=awesomized%2Flibmemcached diff --git a/libmemcached/purge.cc b/libmemcached/purge.cc index 07cd135f..4dbe24d0 100644 --- a/libmemcached/purge.cc +++ b/libmemcached/purge.cc @@ -1,10 +1,87 @@ -#include "common.h" +/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab: + * + * LibMemcached + * + * Copyright (C) 2011 Data Differential, http://datadifferential.com/ + * Copyright (C) 2006-2009 Brian Aker + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * * The names of its contributors may not be used to endorse or + * promote products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ -memcached_return_t memcached_purge(memcached_server_write_instance_st ptr) + +#include + +#define memcached_set_purging(__object, __value) ((__object)->state.is_purging= (__value)) + +class Purge +{ +public: + Purge(Memcached* arg) : + _memc(arg) + { + memcached_set_purging(_memc, true); + } + + ~Purge() + { + memcached_set_purging(_memc, false); + } + +private: + Memcached* _memc; +}; + +class PollTimeout +{ +public: + PollTimeout(Memcached* arg) : + _timeout(arg->poll_timeout), + _origin(arg->poll_timeout) + { + _origin = 2000; + } + + ~PollTimeout() + { + _origin= _timeout; + } + +private: + int32_t _timeout; + int32_t& _origin; +}; + +bool memcached_purge(memcached_instance_st* ptr) { - uint32_t x; - memcached_return_t ret= MEMCACHED_SUCCESS; - memcached_st *root= (memcached_st *)ptr->root; + Memcached *root= (Memcached *)ptr->root; if (memcached_is_purging(ptr->root) || /* already purging */ (memcached_server_response_count(ptr) < ptr->root->io_msg_watermark && @@ -12,79 +89,77 @@ memcached_return_t memcached_purge(memcached_server_write_instance_st ptr) (ptr->io_bytes_sent >= ptr->root->io_bytes_watermark && memcached_server_response_count(ptr) < 2)) { - return MEMCACHED_SUCCESS; + return true; } - /* memcached_io_write and memcached_response may call memcached_purge - so we need to be able stop any recursion.. */ - memcached_set_purging(root, true); + /* + memcached_io_write and memcached_response may call memcached_purge + so we need to be able stop any recursion.. + */ + Purge set_purge(root); - WATCHPOINT_ASSERT(ptr->fd != -1); - /* Force a flush of the buffer to ensure that we don't have the n-1 pending - requests buffered up.. */ - if (memcached_io_write(ptr, NULL, 0, true) == -1) + WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET); + /* + Force a flush of the buffer to ensure that we don't have the n-1 pending + requests buffered up.. + */ + if (memcached_io_write(ptr) == false) { - memcached_set_purging(root, true); - - return MEMCACHED_WRITE_FAILURE; + memcached_io_reset(ptr); + memcached_set_error(*ptr, MEMCACHED_WRITE_FAILURE, MEMCACHED_AT); + return false; } - WATCHPOINT_ASSERT(ptr->fd != -1); + WATCHPOINT_ASSERT(ptr->fd != INVALID_SOCKET); - uint32_t no_msg= memcached_server_response_count(ptr) - 1; - if (no_msg > 0) + bool is_successful= true; + uint32_t no_msg= memcached_server_response_count(ptr); + if (no_msg > 1) { memcached_result_st result; - memcached_result_st *result_ptr; - char buffer[SMALL_STRING_LEN]; /* * We need to increase the timeout, because we might be waiting for * data to be sent from the server (the commands was in the output buffer * and just flushed */ - const int32_t timeo= ptr->root->poll_timeout; - root->poll_timeout= 2000; + PollTimeout poll_timeout(ptr->root); - result_ptr= memcached_result_create(root, &result); - WATCHPOINT_ASSERT(result_ptr); + memcached_result_st* result_ptr= memcached_result_create(root, &result); + assert(result_ptr); - for (x= 0; x < no_msg; x++) + for (uint32_t x= 0; x < no_msg - 1; x++) { memcached_result_reset(result_ptr); - memcached_return_t rc= memcached_read_one_response(ptr, buffer, - sizeof (buffer), - result_ptr); + memcached_return_t rc= memcached_read_one_response(ptr, result_ptr); /* * Purge doesn't care for what kind of command results that is received. * The only kind of errors I care about if is I'm out of sync with the * protocol or have problems reading data from the network.. */ - if (rc== MEMCACHED_PROTOCOL_ERROR || rc == MEMCACHED_UNKNOWN_READ_FAILURE) + if (rc== MEMCACHED_PROTOCOL_ERROR or rc == MEMCACHED_UNKNOWN_READ_FAILURE or rc == MEMCACHED_READ_FAILURE) { WATCHPOINT_ERROR(rc); - ret = rc; - memcached_io_reset(ptr); + is_successful= false; } if (ptr->root->callbacks != NULL) { memcached_callback_st cb = *ptr->root->callbacks; - if (rc == MEMCACHED_SUCCESS) + if (memcached_success(rc)) { for (uint32_t y= 0; y < cb.number_of_callback; y++) { - rc = (*cb.callback[y])(ptr->root, result_ptr, cb.context); - if (rc != MEMCACHED_SUCCESS) + if (memcached_fatal((*cb.callback[y])(ptr->root, result_ptr, cb.context))) + { break; + } } } } } memcached_result_free(result_ptr); - root->poll_timeout= timeo; } - memcached_set_purging(root, false); - return ret; + return is_successful; }