264 lines
5.6 KiB
C
264 lines
5.6 KiB
C
#include "ecore_private.h"
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#include "Ecore.h"
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#include <sys/types.h>
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#include <signal.h>
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#include <unistd.h>
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#ifndef WIN32
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static Ecore_Exe *exes = NULL;
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/**
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* @defgroup Ecore_Exe_Basic_Group Process Spawning Functions
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*
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* Functions that deal with spawned processes.
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*/
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/**
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* Spawns a child process.
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*
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* This function forks and runs the given command using @c /bin/sh.
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*
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* Note that the process handle is only valid until a child process
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* terminated event is received. After all handlers for the child process
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* terminated event have been called, the handle will be freed by Ecore.
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*
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* @param exe_cmd The command to run with @c /bin/sh.
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* @param data Data to attach to the returned process handle.
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* @return A process handle to the spawned process.
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* @ingroup Ecore_Exe_Basic_Group
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*/
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Ecore_Exe *
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ecore_exe_run(const char *exe_cmd, const void *data)
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{
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Ecore_Exe *exe;
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pid_t pid;
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if (!exe_cmd) return NULL;
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pid = fork();
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if (pid)
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{
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exe = calloc(1, sizeof(Ecore_Exe));
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if (!exe)
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{
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kill(pid, SIGKILL);
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return NULL;
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}
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ECORE_MAGIC_SET(exe, ECORE_MAGIC_EXE);
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exe->pid = pid;
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exe->data = (void *)data;
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exes = _ecore_list_append(exes, exe);
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return exe;
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}
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setsid();
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execl("/bin/sh", "/bin/sh", "-c", exe_cmd, NULL);
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exit(0);
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return NULL;
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}
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/**
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* Frees the given process handle.
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*
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* Note that the process that the handle represents is unaffected by this
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* function.
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*
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* @param exe The given process handle.
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* @return The data attached to the handle when @ref ecore_exe_run was
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* called.
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* @ingroup Ecore_Exe_Basic_Group
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*/
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void *
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ecore_exe_free(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_free");
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return NULL;
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}
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return _ecore_exe_free(exe);
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}
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/**
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* Retrieves the process ID of the given spawned process.
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* @param exe Handle to the given spawned process.
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* @return The process ID on success. @c -1 otherwise.
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* @ingroup Ecore_Exe_Basic_Group
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*/
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pid_t
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ecore_exe_pid_get(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_pid_get");
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return -1;
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}
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return exe->pid;
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}
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/**
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* Retrieves the data attached to the given process handle.
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* @param exe The given process handle.
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* @return The data pointer attached to @p exe.
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* @ingroup Ecore_Exe_Basic_Group
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*/
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void *
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ecore_exe_data_get(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_data_get");
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return NULL;
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}
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return exe->data;
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}
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/**
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* @defgroup Ecore_Exe_Signal_Group Spawned Process Signal Functions
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*
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* Functions that send signals to spawned processes.
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*/
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/**
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* Pauses the given process by sending it a @c SIGSTOP signal.
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* @param exe Process handle to the given process.
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* @ingroup Ecore_Exe_Signal_Group
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*/
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void
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ecore_exe_pause(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_pause");
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return;
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}
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kill(exe->pid, SIGSTOP);
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}
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/**
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* Continues the given paused process by sending it a @c SIGCONT signal.
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* @param exe Process handle to the given process.
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* @ingroup Ecore_Exe_Signal_Group
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*/
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void
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ecore_exe_continue(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_continue");
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return;
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}
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kill(exe->pid, SIGCONT);
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}
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/**
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* Sends the given spawned process a terminate (@c SIGTERM) signal.
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* @param exe Process handle to the given process.
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* @ingroup Ecore_Exe_Signal_Group
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*/
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void
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ecore_exe_terminate(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_terminate");
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return;
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}
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kill(exe->pid, SIGTERM);
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}
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/**
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* Kills the given spawned process by sending it a @c SIGKILL signal.
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* @param exe Process handle to the given process.
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* @ingroup Ecore_Exe_Signal_Group
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*/
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void
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ecore_exe_kill(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_kill");
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return;
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}
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kill(exe->pid, SIGKILL);
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}
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/**
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* Sends a @c SIGUSR signal to the given spawned process.
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* @param exe Process handle to the given process.
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* @param num The number user signal to send. Must be either 1 or 2, or
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* the signal will be ignored.
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* @ingroup Ecore_Exe_Signal_Group
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*/
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void
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ecore_exe_signal(Ecore_Exe *exe, int num)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_signal");
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return;
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}
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if (num == 1)
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kill(exe->pid, SIGUSR1);
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else if (num == 2)
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kill(exe->pid, SIGUSR2);
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}
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/**
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* Sends a @c SIGHUP signal to the given spawned process.
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* @param exe Process handle to the given process.
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* @ingroup Ecore_Exe_Signal_Group
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*/
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void
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ecore_exe_hup(Ecore_Exe *exe)
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{
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if (!ECORE_MAGIC_CHECK(exe, ECORE_MAGIC_EXE))
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{
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ECORE_MAGIC_FAIL(exe, ECORE_MAGIC_EXE,
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"ecore_exe_hup");
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return;
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}
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kill(exe->pid, SIGHUP);
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}
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void
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_ecore_exe_shutdown(void)
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{
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while (exes) _ecore_exe_free(exes);
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}
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Ecore_Exe *
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_ecore_exe_find(pid_t pid)
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{
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Ecore_Oldlist *l;
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for (l = (Ecore_Oldlist *)exes; l; l = l->next)
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{
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Ecore_Exe *exe;
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exe = (Ecore_Exe *)l;
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if (exe->pid == pid) return exe;
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}
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return NULL;
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}
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void *
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_ecore_exe_free(Ecore_Exe *exe)
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{
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void *data;
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data = exe->data;
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exes = _ecore_list_remove(exes, exe);
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ECORE_MAGIC_SET(exe, ECORE_MAGIC_NONE);
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free(exe);
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return data;
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}
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#endif
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