| /*------------------------------------------------------------------------- |
| * |
| * syslogger.h |
| * Exports from postmaster/syslogger.c. |
| * |
| * Copyright (c) 2004-2009, PostgreSQL Global Development Group |
| * |
| * $PostgreSQL: pgsql/src/include/postmaster/syslogger.h,v 1.7.2.1 2007/06/14 01:49:39 adunstan Exp $ |
| * |
| *------------------------------------------------------------------------- |
| */ |
| #ifndef _SYSLOGGER_H |
| #define _SYSLOGGER_H |
| |
| #include <limits.h> /* for PIPE_BUF */ |
| |
| /* |
| * We really want line-buffered mode for logfile output, but Windows does |
| * not have it, and interprets _IOLBF as _IOFBF (bozos). So use _IONBF |
| * instead on Windows. |
| */ |
| #ifdef WIN32 |
| #define LBF_MODE _IONBF |
| #define LOG_EOL "\r\n" |
| #else |
| #define LBF_MODE _IOLBF |
| #define LOG_EOL "\n" |
| #endif |
| |
| /* |
| * Primitive protocol structure for writing to syslogger pipe(s). The idea |
| * here is to divide long messages into chunks that are not more than |
| * PIPE_BUF bytes long, which according to POSIX spec must be written into |
| * the pipe atomically. The pipe reader then uses the protocol headers to |
| * reassemble the parts of a message into a single string. The reader can |
| * also cope with non-protocol data coming down the pipe, though we cannot |
| * guarantee long strings won't get split apart. |
| * |
| * We use 't' or 'f' instead of a bool for is_last to make the protocol a tiny |
| * bit more robust against finding a false double nul byte prologue. But we |
| * still might find it in the len and/or pid bytes unless we're careful. |
| */ |
| |
| #ifdef PIPE_BUF |
| /* Are there any systems with PIPE_BUF > 64K? Unlikely, but ... */ |
| #if PIPE_BUF > 65536 |
| #define PIPE_CHUNK_SIZE 65536 |
| #else |
| #define PIPE_CHUNK_SIZE ((int) PIPE_BUF) |
| #endif |
| #else /* not defined */ |
| /* POSIX says the value of PIPE_BUF must be at least 512, so use that */ |
| #define PIPE_CHUNK_SIZE 512 |
| #endif |
| |
| /* |
| * This is used to fake the thread id to be used inside the SEGV/BUS/ILL |
| * handler. |
| */ |
| #define FIXED_THREAD_ID 123456 |
| |
| typedef struct |
| { |
| int32 zero; /* leading zero */ |
| int32 len; /* len, not including hdr */ |
| int32 pid; /* writer's pid */ |
| int32 thid; /* thread id */ |
| int32 main_thid; /* main thread id */ |
| int32 chunk_no; /* chunk number */ |
| char is_last; /* last chunk of message? 't' or 'f' */ |
| char log_format; /* 'c' for csv, 't' for text */ |
| char is_segv_msg; /* indicate whether this is a message sent in SEGV/BUS/ILL handler */ |
| int64 log_line_number; /* indicate the order of the message */ |
| int64 next; /* next chained chunk. also force an 8 bytes align */ |
| } PipeProtoHeader; |
| |
| #define PIPE_HEADER_UNALIGNED_SIZE sizeof(PipeProtoHeader) |
| #define PIPE_MAX_PAYLOAD ((int) (PIPE_CHUNK_SIZE - MAXALIGN(PIPE_HEADER_UNALIGNED_SIZE))) |
| |
| #define CHUNK_SLOTS 400 |
| |
| typedef struct |
| { |
| PipeProtoHeader hdr; |
| char data[PIPE_MAX_PAYLOAD]; |
| } PipeProtoChunk; |
| |
| #define PIPE_HEADER_SIZE offsetof(PipeProtoChunk, data) |
| |
| typedef struct CSVChunkStr |
| { |
| const PipeProtoChunk *chunk; |
| const char *p; |
| } CSVChunkStr; |
| |
| extern void write_syslogger_file_binary(const char *buffer, int count); |
| extern void syslogger_log_chunk_list(PipeProtoChunk *chunk); |
| |
| typedef struct |
| { |
| pg_time_t session_start_time; |
| char send_alert; |
| char omit_location; |
| char gp_is_primary; |
| int32 gp_session_id; |
| int32 gp_command_count; |
| int32 gp_segment_id; |
| int32 slice_id; |
| int32 error_cursor_pos; |
| int32 internal_query_pos; |
| int32 error_fileline; |
| TransactionId top_trans_id; |
| DistributedTransactionId dist_trans_id; |
| TransactionId local_trans_id; |
| TransactionId subtrans_id; |
| } GpErrorDataFixFields; |
| |
| /* |
| * The format for GPDB error data. |
| */ |
| typedef struct |
| { |
| /* Fix-length field */ |
| GpErrorDataFixFields fix_fields; |
| |
| /* variable-length field */ |
| char *username; |
| char *databasename; |
| char *remote_host; |
| char *remote_port; |
| const char *error_severity; |
| char *sql_state; |
| char *error_message; |
| char *error_detail; |
| char *error_hint; |
| char *internal_query; |
| char *error_context; |
| char *debug_query_string; |
| const char *error_func_name; |
| const char *error_filename; |
| char *stacktrace; |
| } GpErrorData; |
| |
| /* |
| * The format of GPDB segv/bus/ill error data. |
| * |
| * This structure contains minimal but essential information when a SEGV/BUS/ILL |
| * signal is received. Note that the stack addresses are not stored here, but when |
| * in use, they usually are stored right after this structure. |
| * |
| * No other data with variable-length are stored here currently, since we want to |
| * minimize the work inside a signal handler. |
| */ |
| typedef struct |
| { |
| pg_time_t session_start_time; |
| int32 gp_session_id; |
| int32 gp_command_count; |
| int32 gp_segment_id; |
| int32 slice_id; |
| int32 signal_num; |
| |
| /* The depth of stack frame addresses that are stored after this structure */ |
| int32 frame_depth; |
| } GpSegvErrorData; |
| |
| /* GUC options */ |
| extern bool Redirect_stderr; |
| extern int Log_RotationAge; |
| extern int Log_RotationSize; |
| extern PGDLLIMPORT char *Log_directory; |
| extern PGDLLIMPORT char *Log_filename; |
| extern bool Log_truncate_on_rotation; |
| extern int gp_log_format; |
| |
| extern bool am_syslogger; |
| |
| #ifndef WIN32 |
| extern int syslogPipe[2]; |
| #else |
| extern HANDLE syslogPipe[2]; |
| #endif |
| |
| |
| extern int SysLogger_Start(void); |
| |
| extern void write_syslogger_file(const char *buffer, int count); |
| |
| extern void syslogger_append_timestamp(pg_time_t stamp_time, bool amsyslogger, bool append_comma); |
| extern void syslogger_append_current_timestamp(bool amsyslogger); |
| extern void syslogger_write_int32(bool test0, const char *prefix, int32 i, |
| bool amsyslogger, bool append_comma); |
| extern int syslogger_write_str(const char *data, int len, bool amsyslogger, bool csv); |
| |
| #ifdef EXEC_BACKEND |
| extern void SysLoggerMain(int argc, char *argv[]); |
| #endif |
| |
| #endif /* _SYSLOGGER_H */ |