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cancel.h File Reference

#include <signal.h>
#include "libpq-fe.h"

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Functions

void SetCancelConn (PGconn *conn)

void ResetCancelConn (void)

void setup_cancel_handler (void(*query_cancel_callback)(void))

Variables

PGDLLIMPORT volatile sig_atomic_t CancelRequested

Function Documentation

◆ ResetCancelConn()

void ResetCancelConn ( void )

Definition at line 107 of file cancel.c.

108{

109 PGcancel *oldCancelConn;

110

111#ifdef WIN32

112 EnterCriticalSection(&cancelConnLock);

113#endif

114

115 oldCancelConn = cancelConn;

116

117 /* be sure handle_sigint doesn't use pointer while freeing */

118 cancelConn = NULL;

119

120 if (oldCancelConn != NULL)

121 PQfreeCancel(oldCancelConn);

122

123#ifdef WIN32

124 LeaveCriticalSection(&cancelConnLock);

125#endif

126}

cancelConn

static PGcancel *volatile cancelConn

Definition: cancel.c:43

PQfreeCancel

void PQfreeCancel(PGcancel *cancel)

Definition: fe-cancel.c:502

pg_cancel

Definition: fe-cancel.c:41

References cancelConn, and PQfreeCancel().

Referenced by CheckConnection(), consumeQueryResult(), do_connect(), do_lo_export(), do_lo_import(), do_lo_unlink(), executeMaintenanceCommand(), HandleCopyResult(), PSQLexec(), PSQLexecWatch(), runInitSteps(), SendQuery(), and wait_on_slots().

◆ SetCancelConn()

void SetCancelConn ( PGconn * conn )

Definition at line 77 of file cancel.c.

78{

79 PGcancel *oldCancelConn;

80

81#ifdef WIN32

82 EnterCriticalSection(&cancelConnLock);

83#endif

84

85 /* Free the old one if we have one */

86 oldCancelConn = cancelConn;

87

88 /* be sure handle_sigint doesn't use pointer while freeing */

89 cancelConn = NULL;

90

91 if (oldCancelConn != NULL)

92 PQfreeCancel(oldCancelConn);

93

94 cancelConn = PQgetCancel(conn);

95

96#ifdef WIN32

97 LeaveCriticalSection(&cancelConnLock);

98#endif

99}

PQgetCancel

PGcancel * PQgetCancel(PGconn *conn)

Definition: fe-cancel.c:368

conn

PGconn * conn

Definition: streamutil.c:52

References cancelConn, conn, PQfreeCancel(), and PQgetCancel().

Referenced by consumeQueryResult(), do_lo_export(), do_lo_import(), do_lo_unlink(), executeMaintenanceCommand(), HandleCopyResult(), PSQLexec(), PSQLexecWatch(), runInitSteps(), SendQuery(), and wait_on_slots().

◆ setup_cancel_handler()

void setup_cancel_handler ( void(*)(void) query_cancel_callback )

Definition at line 183 of file cancel.c.

184{

185 cancel_callback = query_cancel_callback;

186 cancel_sent_msg = _("Cancel request sent\n");

187 cancel_not_sent_msg = _("Could not send cancel request: ");

188

189 pqsignal(SIGINT, handle_sigint);

190}

cancel_callback

static void(* cancel_callback)(void)

Definition: cancel.c:68

cancel_sent_msg

static const char * cancel_sent_msg

Definition: cancel.c:49

cancel_not_sent_msg

static const char * cancel_not_sent_msg

Definition: cancel.c:50

handle_sigint

static void handle_sigint(SIGNAL_ARGS)

Definition: cancel.c:153

_

#define _(x)

Definition: elog.c:91

pqsignal

#define pqsignal

Definition: port.h:531

References _, cancel_callback, cancel_not_sent_msg, cancel_sent_msg, handle_sigint(), and pqsignal.

Referenced by main(), psql_setup_cancel_handler(), runInitSteps(), and vacuuming_main().

Variable Documentation

◆ CancelRequested

PGDLLIMPORT volatile sig_atomic_t CancelRequested

extern

Definition at line 59 of file cancel.c.

Referenced by handle_sigint(), initPopulateTable(), main(), reindex_one_database(), select_loop(), and vacuum_one_database().