NAME
dpid.h - Contains an API for manipulating PID files.
SYNOPSIS
#include <sys/types.h>
Defines
#define DAEMON_PID_FILE_KILL_WAIT_AVAILABLE 1
If this variable is defined to 1 iff daemon_pid_file_kill_wait() is supported.
Typedefs
typedef const char *(*) daemon_pid_file_proc_t (void)
Prototype of a function for generating the name of a PID file.
Functions
const char * daemon_pid_file_proc_default (void)
A function for creating a pid file name from daemon_pid_file_ident.
int daemon_pid_file_create (void)
Creates PID pid file for the current process.
int daemon_pid_file_remove (void)
Removes the PID file of the current process.
pid_t daemon_pid_file_is_running (void)
Returns the PID file of a running daemon, if available.
int daemon_pid_file_kill (int s)
Kills a running daemon, if available.
int daemon_pid_file_kill_wait (int s, int m)
Similar to daemon_pid_file_kill() but waits until the process died.
Variables
const char * daemon_pid_file_ident
Identification string for the PID file name, only used when daemon_pid_file_proc is set to daemon_pid_file_proc_default().
daemon_pid_file_proc_t daemon_pid_file_proc
A function pointer which is used to generate the name of the PID file to manipulate.
Detailed Description
Contains an API for manipulating PID files.
Definition in file dpid.h.
Define Documentation
#define DAEMON_PID_FILE_KILL_WAIT_AVAILABLE 1
If this variable is defined to 1 iff daemon_pid_file_kill_wait() is supported.
Definition at line 81 of file dpid.h.
Typedef Documentation
typedef const char*(*) daemon_pid_file_proc_t(void)
Prototype of a function for generating the name of a PID file.
Definition at line 38 of file dpid.h.
Function Documentation
int daemon_pid_file_create (void)
Creates PID pid file for the current process.
Returns:
zero on success, nonzero on failure
Examples:
testd.c.
pid_t daemon_pid_file_is_running (void)
Returns the PID file of a running daemon, if available.
Returns:
The PID or negative on failure
Examples:
testd.c.
int daemon_pid_file_kill (int s)
Kills a running daemon, if available.
Parameters:
s The signal to send
Returns:
zero on success, nonzero on failure
int daemon_pid_file_kill_wait (int s, int m)
Similar to daemon_pid_file_kill() but waits until the process died.
This functions is new in libdaemon 0.3. The macro DAEMON_PID_FILE_KILL_WAIT_AVAILABLE is defined iff libdaemon supports this function.
Parameters:
s The signal to send
m Seconds to wait at maximum
Returns:
zero on success, nonzero on failure (timeout condition is considered a failure)
Examples:
testd.c.
const char* daemon_pid_file_proc_default (void)
A function for creating a pid file name from daemon_pid_file_ident.
Returns:
The PID file path
int daemon_pid_file_remove (void)
Removes the PID file of the current process.
Returns:
zero on success, nonzero on failure
Examples:
testd.c.
Variable Documentation
const char* daemon_pid_file_ident
Identification string for the PID file name, only used when daemon_pid_file_proc is set to daemon_pid_file_proc_default().
Use daemon_ident_from_argv0() to generate an identification string from argv[0]
Examples:
testd.c.
daemon_pid_file_proc_t daemon_pid_file_proc
A function pointer which is used to generate the name of the PID file to manipulate.
Points to daemon_pid_file_proc_default() by default.
Author
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