X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fhosts.cc;h=98cb3f7d48dc777c1d4ca18f1c3f75b7a471f771;hb=fba95501bb492d279f66ab91ec317139213d04d0;hp=898bff9dfe3fdabc48d65c306147f23a4b1cb171;hpb=999006a8904a0f08293f1df7bda81bff914b091a;p=awesomized%2Flibmemcached diff --git a/libmemcached/hosts.cc b/libmemcached/hosts.cc index 898bff9d..98cb3f7d 100644 --- a/libmemcached/hosts.cc +++ b/libmemcached/hosts.cc @@ -36,42 +36,39 @@ */ #include +#include "libmemcached/assert.hpp" #include #include /* Protoypes (static) */ -static memcached_return_t update_continuum(memcached_st *ptr); +static memcached_return_t update_continuum(Memcached *ptr); static int compare_servers(const void *p1, const void *p2) { - memcached_server_instance_st a= (memcached_server_instance_st)p1; - memcached_server_instance_st b= (memcached_server_instance_st)p2; + const memcached_instance_st * a= (const memcached_instance_st *)p1; + const memcached_instance_st * b= (const memcached_instance_st *)p2; - int return_value= strcmp(a->hostname, b->hostname); + int return_value= strcmp(a->_hostname, b->_hostname); if (return_value == 0) { - return_value= (int) (a->port - b->port); + return_value= int(a->port() - b->port()); } return return_value; } -static void sort_hosts(memcached_st *ptr) +static void sort_hosts(Memcached *ptr) { if (memcached_server_count(ptr)) { - memcached_server_write_instance_st instance; - qsort(memcached_instance_list(ptr), memcached_server_count(ptr), sizeof(memcached_instance_st), compare_servers); - instance= memcached_server_instance_fetch(ptr, 0); - instance->number_of_hosts= memcached_server_count(ptr); } } -memcached_return_t run_distribution(memcached_st *ptr) +memcached_return_t run_distribution(Memcached *ptr) { if (ptr->flags.use_sort_hosts) { @@ -122,14 +119,31 @@ static int continuum_item_cmp(const void *t1, const void *t2) /* Why 153? Hmmm... */ WATCHPOINT_ASSERT(ct1->value != 153); if (ct1->value == ct2->value) - return 0; + { + if (ct1->index == ct2->index) + { + return 0; + } + else if (ct1->index > ct2->index) + { + return 1; + } + else + { + return -1; + } + } else if (ct1->value > ct2->value) + { return 1; + } else + { return -1; + } } -static memcached_return_t update_continuum(memcached_st *ptr) +static memcached_return_t update_continuum(Memcached *ptr) { uint32_t continuum_index= 0; uint32_t pointer_counter= 0; @@ -143,7 +157,7 @@ static memcached_return_t update_continuum(memcached_st *ptr) return memcached_set_errno(*ptr, errno, MEMCACHED_AT); } - memcached_instance_st *list= memcached_instance_list(ptr); + memcached_instance_st* list= memcached_instance_list(ptr); /* count live servers (those without a retry delay set) */ bool is_auto_ejecting= _is_auto_eject_host(ptr); @@ -171,19 +185,20 @@ static memcached_return_t update_continuum(memcached_st *ptr) live_servers= memcached_server_count(ptr); } - uint64_t is_ketama_weighted= memcached_behavior_get(ptr, MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED); - uint32_t points_per_server= (uint32_t) (is_ketama_weighted ? MEMCACHED_POINTS_PER_SERVER_KETAMA : MEMCACHED_POINTS_PER_SERVER); - - if (not live_servers) + if (live_servers == 0) { return MEMCACHED_SUCCESS; } - if (live_servers > ptr->ketama.continuum_count) + uint32_t points_per_server = (uint32_t) (memcached_is_weighted_ketama(ptr) ? MEMCACHED_POINTS_PER_SERVER_KETAMA : MEMCACHED_POINTS_PER_SERVER); + uint32_t continuum_limit = live_servers * points_per_server; + uint32_t continuum_extra = MEMCACHED_CONTINUUM_ADDITION * points_per_server; + + if (continuum_limit > ptr->ketama.continuum_count) { memcached_continuum_item_st *new_ptr; - new_ptr= libmemcached_xrealloc(ptr, ptr->ketama.continuum, (live_servers + MEMCACHED_CONTINUUM_ADDITION) * points_per_server, memcached_continuum_item_st); + new_ptr= libmemcached_xrealloc(ptr, ptr->ketama.continuum, continuum_limit + continuum_extra, memcached_continuum_item_st); if (new_ptr == 0) { @@ -191,11 +206,12 @@ static memcached_return_t update_continuum(memcached_st *ptr) } ptr->ketama.continuum= new_ptr; - ptr->ketama.continuum_count= live_servers + MEMCACHED_CONTINUUM_ADDITION; + ptr->ketama.continuum_count= continuum_limit + continuum_extra; } + assert_msg(ptr->ketama.continuum, "Programmer Error, empty ketama continuum"); uint64_t total_weight= 0; - if (is_ketama_weighted) + if (memcached_is_weighted_ketama(ptr)) { for (uint32_t host_index = 0; host_index < memcached_server_count(ptr); ++host_index) { @@ -213,16 +229,16 @@ static memcached_return_t update_continuum(memcached_st *ptr) continue; } - if (is_ketama_weighted) + if (memcached_is_weighted_ketama(ptr)) { float pct= (float)list[host_index].weight / (float)total_weight; pointer_per_server= (uint32_t) ((::floor((float) (pct * MEMCACHED_POINTS_PER_SERVER_KETAMA / 4 * (float)live_servers + 0.0000000001))) * 4); pointer_per_hash= 4; - if (DEBUG) + if (0 && DEBUG) { printf("ketama_weighted:%s|%d|%llu|%u\n", - list[host_index].hostname, - list[host_index].port, + list[host_index]._hostname, + list[host_index].port(), (unsigned long long)list[host_index].weight, pointer_per_server); } @@ -242,8 +258,8 @@ static memcached_return_t update_continuum(memcached_st *ptr) // If hostname is not available then: /ip:port-index sort_host_length= snprintf(sort_host, sizeof(sort_host), "/%s:%u-%u", - list[host_index].hostname, - (uint32_t)list[host_index].port, + list[host_index]._hostname, + (uint32_t)list[host_index].port(), pointer_index); if (size_t(sort_host_length) >= sizeof(sort_host) or sort_host_length < 0) @@ -252,12 +268,12 @@ static memcached_return_t update_continuum(memcached_st *ptr) memcached_literal_param("snprintf(sizeof(sort_host))")); } - if (DEBUG) + if (0 && DEBUG) { fprintf(stdout, "update_continuum: key is %s\n", sort_host); } - if (is_ketama_weighted) + if (memcached_is_weighted_ketama(ptr)) { for (uint32_t x= 0; x < pointer_per_hash; x++) { @@ -283,19 +299,19 @@ static memcached_return_t update_continuum(memcached_st *ptr) char sort_host[MEMCACHED_NI_MAXHOST +1 +MEMCACHED_NI_MAXSERV +1 +MEMCACHED_NI_MAXSERV]= ""; int sort_host_length; - if (list[host_index].port == MEMCACHED_DEFAULT_PORT) + if (list[host_index].port() == MEMCACHED_DEFAULT_PORT) { sort_host_length= snprintf(sort_host, sizeof(sort_host), "%s-%u", - list[host_index].hostname, + list[host_index]._hostname, pointer_index - 1); } else { sort_host_length= snprintf(sort_host, sizeof(sort_host), "%s:%u-%u", - list[host_index].hostname, - (uint32_t)list[host_index].port, + list[host_index]._hostname, + (uint32_t)list[host_index].port(), pointer_index - 1); } @@ -305,7 +321,7 @@ static memcached_return_t update_continuum(memcached_st *ptr) memcached_literal_param("snprintf(sizeof(sort_host)))")); } - if (is_ketama_weighted) + if (memcached_is_weighted_ketama(ptr)) { for (uint32_t x = 0; x < pointer_per_hash; x++) { @@ -326,9 +342,9 @@ static memcached_return_t update_continuum(memcached_st *ptr) pointer_counter+= pointer_per_server; } - WATCHPOINT_ASSERT(ptr); - WATCHPOINT_ASSERT(ptr->ketama.continuum); - WATCHPOINT_ASSERT(memcached_server_count(ptr) * MEMCACHED_POINTS_PER_SERVER <= MEMCACHED_CONTINUUM_SIZE); + assert_msg(ptr, "Programmer Error, no valid ptr"); + assert_msg(ptr->ketama.continuum, "Programmer Error, empty ketama continuum"); + assert_msg(memcached_server_count(ptr) * MEMCACHED_POINTS_PER_SERVER <= MEMCACHED_CONTINUUM_SIZE, "invalid size information being given to qsort()"); ptr->ketama.continuum_points_counter= pointer_counter; qsort(ptr->ketama.continuum, ptr->ketama.continuum_points_counter, sizeof(memcached_continuum_item_st), continuum_item_cmp); @@ -343,98 +359,107 @@ static memcached_return_t update_continuum(memcached_st *ptr) return MEMCACHED_SUCCESS; } -static memcached_return_t server_add(memcached_st *ptr, +static memcached_return_t server_add(Memcached *memc, const memcached_string_t& hostname, in_port_t port, uint32_t weight, memcached_connection_t type) { - assert_msg(ptr, "Programmer mistake, somehow server_add() was passed a NULL memcached_st"); + assert_msg(memc, "Programmer mistake, somehow server_add() was passed a NULL memcached_st"); + + if (memc->number_of_hosts) + { + assert(memcached_instance_list(memc)); + } + + if (memcached_instance_list(memc)) + { + assert(memc->number_of_hosts); + } - memcached_instance_st *new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), (ptr->number_of_hosts + 1), memcached_instance_st); + uint32_t host_list_size= memc->number_of_hosts +1; + memcached_instance_st* new_host_list= libmemcached_xrealloc(memc, memcached_instance_list(memc), host_list_size, memcached_instance_st); if (new_host_list == NULL) { - return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); + return memcached_set_error(*memc, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); } - memcached_instance_set(ptr, new_host_list); + memcached_instance_set(memc, new_host_list, host_list_size); + assert(memc->number_of_hosts == host_list_size); /* TODO: Check return type */ - memcached_server_write_instance_st instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr)); + memcached_instance_st* instance= memcached_instance_fetch(memc, memcached_server_count(memc) -1); - if (__instance_create_with(ptr, instance, hostname, port, weight, type) == NULL) + if (__instance_create_with(memc, instance, hostname, port, weight, type) == NULL) { - return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); + return memcached_set_error(*memc, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); } if (weight > 1) { - ptr->ketama.weighted= true; + if (memcached_is_consistent_distribution(memc)) + { + memcached_set_weighted_ketama(memc, true); + } } - ptr->number_of_hosts++; - - // @note we place the count in the bottom of the server list - instance= memcached_server_instance_fetch(ptr, 0); - memcached_instance_set_count(instance, memcached_server_count(ptr)); - - return run_distribution(ptr); + return run_distribution(memc); } -memcached_return_t memcached_server_push(memcached_st *ptr, const memcached_server_list_st list) +memcached_return_t memcached_server_push(memcached_st *shell, const memcached_server_list_st list) { if (list == NULL) { return MEMCACHED_SUCCESS; } - uint32_t count= memcached_server_list_count(list); - - memcached_instance_st *new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), (count + memcached_server_count(ptr)), memcached_instance_st); - - if (new_host_list == NULL) - { - return MEMCACHED_MEMORY_ALLOCATION_FAILURE; - } - - memcached_instance_set(ptr, new_host_list); - - for (uint32_t x= 0; x < count; x++) + Memcached* ptr= memcached2Memcached(shell); + if (ptr) { - memcached_server_write_instance_st instance; + uint32_t original_host_size= memcached_server_count(ptr); + uint32_t count= memcached_server_list_count(list); + uint32_t host_list_size= count +original_host_size; - WATCHPOINT_ASSERT(list[x].hostname[0] != 0); + memcached_instance_st* new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), host_list_size, memcached_instance_st); - // We have extended the array, and now we will find it, and use it. - instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr)); - WATCHPOINT_ASSERT(instance); - - memcached_string_t hostname= { memcached_string_make_from_cstr(list[x].hostname) }; - if (__instance_create_with(ptr, instance, - hostname, - list[x].port, list[x].weight, list[x].type) == NULL) + if (new_host_list == NULL) { - return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); + return MEMCACHED_MEMORY_ALLOCATION_FAILURE; } - if (list[x].weight > 1) + memcached_instance_set(ptr, new_host_list, host_list_size); + + ptr->state.is_parsing= true; + for (uint32_t x= 0; x < count; ++x, ++original_host_size) { - ptr->ketama.weighted= true; - } + WATCHPOINT_ASSERT(list[x].hostname[0] != 0); - ptr->number_of_hosts++; - } + // We have extended the array, and now we will find it, and use it. + memcached_instance_st* instance= memcached_instance_fetch(ptr, original_host_size); + WATCHPOINT_ASSERT(instance); - // Provides backwards compatibility with server list. - { - memcached_server_write_instance_st instance; - instance= memcached_server_instance_fetch(ptr, 0); - instance->number_of_hosts= memcached_server_count(ptr); + memcached_string_t hostname= { memcached_string_make_from_cstr(list[x].hostname) }; + if (__instance_create_with(ptr, instance, + hostname, + list[x].port, list[x].weight, list[x].type) == NULL) + { + ptr->state.is_parsing= false; + return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); + } + + if (list[x].weight > 1) + { + memcached_set_weighted_ketama(ptr, true); + } + } + ptr->state.is_parsing= false; + + return run_distribution(ptr); } - return run_distribution(ptr); + return MEMCACHED_INVALID_ARGUMENTS; } memcached_return_t memcached_instance_push(memcached_st *ptr, const struct memcached_instance_st* list, uint32_t number_of_hosts) @@ -444,47 +469,45 @@ memcached_return_t memcached_instance_push(memcached_st *ptr, const struct memca return MEMCACHED_SUCCESS; } - memcached_instance_st* new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), (number_of_hosts +memcached_server_count(ptr)), memcached_instance_st); + uint32_t original_host_size= memcached_server_count(ptr); + uint32_t host_list_size= number_of_hosts +original_host_size; + memcached_instance_st* new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), host_list_size, memcached_instance_st); if (new_host_list == NULL) { return MEMCACHED_MEMORY_ALLOCATION_FAILURE; } - memcached_instance_set(ptr, new_host_list); + memcached_instance_set(ptr, new_host_list, host_list_size); - for (uint32_t x= 0; x < number_of_hosts; x++) - { - memcached_server_write_instance_st instance; + // We don't bother with lookups for this operation + ptr->state.is_parsing= true; - WATCHPOINT_ASSERT(list[x].hostname[0] != 0); + // We use original_host_size since size will now point to the first new + // instance allocated. + for (uint32_t x= 0; x < number_of_hosts; ++x, ++original_host_size) + { + WATCHPOINT_ASSERT(list[x]._hostname[0] != 0); // We have extended the array, and now we will find it, and use it. - instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr)); + memcached_instance_st* instance= memcached_instance_fetch(ptr, original_host_size); WATCHPOINT_ASSERT(instance); - memcached_string_t hostname= { memcached_string_make_from_cstr(list[x].hostname) }; + memcached_string_t hostname= { memcached_string_make_from_cstr(list[x]._hostname) }; if (__instance_create_with(ptr, instance, hostname, - list[x].port, list[x].weight, list[x].type) == NULL) + list[x].port(), list[x].weight, list[x].type) == NULL) { + ptr->state.is_parsing= false; return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT); } if (list[x].weight > 1) { - ptr->ketama.weighted= true; + memcached_set_weighted_ketama(ptr, true); } - - ptr->number_of_hosts++; - } - - // Provides backwards compatibility with server list. - { - memcached_server_write_instance_st instance; - instance= memcached_server_instance_fetch(ptr, 0); - instance->number_of_hosts= memcached_server_count(ptr); } + ptr->state.is_parsing= false; return run_distribution(ptr); } @@ -495,22 +518,23 @@ memcached_return_t memcached_server_add_unix_socket(memcached_st *ptr, return memcached_server_add_unix_socket_with_weight(ptr, filename, 0); } -memcached_return_t memcached_server_add_unix_socket_with_weight(memcached_st *ptr, +memcached_return_t memcached_server_add_unix_socket_with_weight(memcached_st *shell, const char *filename, uint32_t weight) { - if (ptr == NULL) + Memcached* ptr= memcached2Memcached(shell); + if (ptr) { - return MEMCACHED_FAILURE; - } + memcached_string_t _filename= { memcached_string_make_from_cstr(filename) }; + if (memcached_is_valid_filename(_filename) == false) + { + return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid filename for socket provided")); + } - memcached_string_t _filename= { memcached_string_make_from_cstr(filename) }; - if (memcached_is_valid_servername(_filename) == false) - { - memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid filename for socket provided")); + return server_add(ptr, _filename, 0, weight, MEMCACHED_CONNECTION_UNIX_SOCKET); } - return server_add(ptr, _filename, 0, weight, MEMCACHED_CONNECTION_UNIX_SOCKET); + return MEMCACHED_FAILURE; } memcached_return_t memcached_server_add_udp(memcached_st *ptr, @@ -520,31 +544,33 @@ memcached_return_t memcached_server_add_udp(memcached_st *ptr, return memcached_server_add_udp_with_weight(ptr, hostname, port, 0); } -memcached_return_t memcached_server_add_udp_with_weight(memcached_st *ptr, +memcached_return_t memcached_server_add_udp_with_weight(memcached_st *shell, const char *, in_port_t, uint32_t) { - if (ptr == NULL) + Memcached* self= memcached2Memcached(shell); + if (self) { - return MEMCACHED_INVALID_ARGUMENTS; + return memcached_set_error(*self, MEMCACHED_DEPRECATED, MEMCACHED_AT); } - return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT); + return MEMCACHED_INVALID_ARGUMENTS; } -memcached_return_t memcached_server_add(memcached_st *ptr, +memcached_return_t memcached_server_add(memcached_st *shell, const char *hostname, in_port_t port) { - return memcached_server_add_with_weight(ptr, hostname, port, 0); + return memcached_server_add_with_weight(shell, hostname, port, 0); } -memcached_return_t memcached_server_add_with_weight(memcached_st *ptr, +memcached_return_t memcached_server_add_with_weight(memcached_st *shell, const char *hostname, in_port_t port, uint32_t weight) { + Memcached* ptr= memcached2Memcached(shell); if (ptr == NULL) { return MEMCACHED_INVALID_ARGUMENTS; @@ -578,7 +604,7 @@ memcached_return_t memcached_server_add_parsed(memcached_st *ptr, in_port_t port, uint32_t weight) { - char buffer[NI_MAXHOST]; + char buffer[MEMCACHED_NI_MAXHOST]= { 0 }; memcpy(buffer, hostname, hostname_length); buffer[hostname_length]= 0;