--- parser3/src/main/pa_sql_driver_manager.C 2002/02/08 08:30:16 1.61 +++ parser3/src/main/pa_sql_driver_manager.C 2003/03/17 14:48:06 1.69.4.1 @@ -1,12 +1,12 @@ /** @file Parser: sql driver manager implementation. - Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) - - $Id: pa_sql_driver_manager.C,v 1.61 2002/02/08 08:30:16 paf Exp $ */ +static const char* IDENT_SQL_DRIVER_MANAGER_C="$Date: 2003/03/17 14:48:06 $"; + #include "pa_sql_driver_manager.h" #include "ltdl.h" #include "pa_sql_connection.h" @@ -46,29 +46,45 @@ public: furl(aurl) { } - virtual void *malloc(size_t size) { return Pooled::malloc(size, 8); } + virtual void *malloc(size_t size) { return Pooled::malloc_atomic(size, 8); } virtual void *calloc(size_t size) { return Pooled::calloc(size); } /** + normally we can't 'throw' from dynamic library, so the idea is to #1 jump to C++ some function to main body, where every function stack frame has exception unwind information and from there... #2 propagate_exception() + + but when parser configured --with-sjlj-exceptions + one can simply 'throw' from dynamic library. + [sad story: one can not longjump/throw due to some bug in gcc as of 3.2.1 version] */ - virtual void _throw(const char *comment) { + virtual void _throw(const SQL_Error& aexception) { + // converting SQL_exception to parser Exception // hiding passwords and addresses from accidental show [imagine user forgot @exception] - e=Exception(0, 0, - &url_without_login(pool(), furl), - comment); +#ifdef PA_WITH_SJLJ_EXCEPTIONS + throw +#else + fexception= +#endif + Exception(aexception.type(), + aexception.problem_source()?static_cast(aexception.problem_source()) + :&url_without_login(pool(), furl), + aexception.comment()); +#ifndef PA_WITH_SJLJ_EXCEPTIONS longjmp(mark, 1); +#endif } virtual void propagate_exception() { - throw e; +#ifndef PA_WITH_SJLJ_EXCEPTIONS + throw fexception; +#endif } private: const String& furl; - Exception e; + Exception fexception; }; // helpers @@ -107,7 +123,7 @@ SQL_Connection_ptr SQL_Driver_manager::g // we have table for locating protocol's library if(!protocol2driver_and_client) - throw Exception(0, 0, + throw Exception("parser.runtime", &request_url, "$"MAIN_SQL_NAME":"MAIN_SQL_DRIVERS_NAME" table must be defined"); @@ -130,13 +146,13 @@ SQL_Connection_ptr SQL_Driver_manager::g else { // no cached connection or it were unpingabe: connect/reconnect int pos=request_url.pos("://", 3); if(pos<0) - throw Exception(0, 0, + throw Exception("parser.runtime", request_url.size()?&request_url:&request_origin, - "connection string must start with protocol://"); // NOTE: not THROW, but PTHROW + "connection string must start with protocol://"); // make global_url C-string on global pool request_url_cstr=request_url.cstr(); - char *global_url_cstr=(char *)malloc(strlen(request_url_cstr)+1); + char *global_url_cstr=(char *)malloc_atomic(strlen(request_url_cstr)+1); strcpy(global_url_cstr, request_url_cstr); // make global_url string on global pool String& global_url=*new(this->pool()) String(this->pool(), global_url_cstr); @@ -146,7 +162,7 @@ SQL_Connection_ptr SQL_Driver_manager::g while(*request_url_cstr=='/') request_url_cstr++; // make global_protocol C-string on global pool - char *global_protocol_cstr=(char *)malloc(strlen(request_protocol_cstr)+1); + char *global_protocol_cstr=(char *)malloc_atomic(strlen(request_protocol_cstr)+1); strcpy(global_protocol_cstr, request_protocol_cstr); // make global_protocol string on global pool String& global_protocol=*new(this->pool()) String(this->pool(), @@ -160,33 +176,33 @@ SQL_Connection_ptr SQL_Driver_manager::g const String *dlopen_file_spec=0; if(protocol2driver_and_client->locate(0, global_protocol)) { if(!(library=protocol2driver_and_client->item(1)) || library->size()==0) - throw Exception(0, 0, + throw Exception("parser.runtime", protocol2driver_and_client->origin_string(), "driver library column for protocol '%s' is empty", request_protocol_cstr); dlopen_file_spec=protocol2driver_and_client->item(2); } else - throw Exception(0, 0, + throw Exception("parser.runtime", &request_url, "undefined protocol '%s'", request_protocol_cstr); if(lt_dlinit()) - throw Exception(0, 0, + throw Exception(0, library, "prepare to dynamic loading failed, %s", lt_dlerror()); const char *filename=library->cstr(String::UL_FILE_SPEC); lt_dlhandle handle=lt_dlopen(filename); if (!handle) - throw Exception(0, 0, + throw Exception(0, library, "can not open the module, %s", lt_dlerror()); SQL_Driver_create_func create=(SQL_Driver_create_func)lt_dlsym(handle, SQL_DRIVER_CREATE_NAME); if(!create) - throw Exception(0, 0, + throw Exception(0, library, "function '"SQL_DRIVER_CREATE_NAME"' was not found"); @@ -196,7 +212,7 @@ SQL_Connection_ptr SQL_Driver_manager::g // validate driver api version int driver_api_version=driver->api_version(); if(driver_api_version!=SQL_DRIVER_API_VERSION) - throw Exception(0, 0, + throw Exception(0, library, "driver implements API version 0x%04X not equal to 0x%04X", driver_api_version, SQL_DRIVER_API_VERSION); @@ -207,7 +223,7 @@ SQL_Connection_ptr SQL_Driver_manager::g dlopen_file_spec->cstr(String::UL_AS_IS):0; if(const char *error=driver->initialize( dlopen_file_spec_cstr)) - throw Exception(0, 0, + throw Exception(0, library, "driver failed to initialize client library '%s', %s", dlopen_file_spec_cstr?dlopen_file_spec_cstr:"unspecifed", @@ -307,7 +323,7 @@ static void add_connection_to_status_cac time_t time_used=connection.get_time_used(); const char *unsafe_time_cstr=ctime(&time_used); int time_buf_size=strlen(unsafe_time_cstr); - char *safe_time_buf=(char *)pool.malloc(time_buf_size); + char *safe_time_buf=(char *)pool.malloc_atomic(time_buf_size); memcpy(safe_time_buf, unsafe_time_cstr, time_buf_size); row+=new(pool) String(pool, safe_time_buf, time_buf_size);