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gem-graph-client/libide/threading/ide-subprocess.c

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/* ide-subprocess.c
*
* Copyright 2016-2019 Christian Hergert <chergert@redhat.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#define G_LOG_DOMAIN "ide-subprocess"
#include "config.h"
#include <string.h>
#include <libide-core.h>
#include "ide-subprocess.h"
G_DEFINE_INTERFACE (IdeSubprocess, ide_subprocess, G_TYPE_OBJECT)
static void
ide_subprocess_default_init (IdeSubprocessInterface *iface)
{
}
#define WRAP_INTERFACE_METHOD(self, name, default_return, ...) \
((IDE_SUBPROCESS_GET_IFACE(self)->name != NULL) ? \
IDE_SUBPROCESS_GET_IFACE(self)->name (self, ##__VA_ARGS__) : \
default_return)
const gchar *
ide_subprocess_get_identifier (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), NULL);
return WRAP_INTERFACE_METHOD (self, get_identifier, NULL);
}
/**
* ide_subprocess_get_stdout_pipe:
*
* Returns: (transfer none): a #GInputStream or %NULL.
*
* Since: 3.32
*/
GInputStream *
ide_subprocess_get_stdout_pipe (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), NULL);
return WRAP_INTERFACE_METHOD (self, get_stdout_pipe, NULL);
}
/**
* ide_subprocess_get_stderr_pipe:
*
* Returns: (transfer none): a #GInputStream or %NULL.
*
* Since: 3.32
*/
GInputStream *
ide_subprocess_get_stderr_pipe (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), NULL);
return WRAP_INTERFACE_METHOD (self, get_stderr_pipe, NULL);
}
/**
* ide_subprocess_get_stdin_pipe:
*
* Returns: (transfer none): a #GOutputStream or %NULL.
*
* Since: 3.32
*/
GOutputStream *
ide_subprocess_get_stdin_pipe (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), NULL);
return WRAP_INTERFACE_METHOD (self, get_stdin_pipe, NULL);
}
gboolean
ide_subprocess_wait (IdeSubprocess *self,
GCancellable *cancellable,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable), FALSE);
return WRAP_INTERFACE_METHOD (self, wait, FALSE, cancellable, error);
}
gboolean
ide_subprocess_wait_check (IdeSubprocess *self,
GCancellable *cancellable,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable), FALSE);
return ide_subprocess_wait (self, cancellable, error) &&
ide_subprocess_check_exit_status (self, error);
}
void
ide_subprocess_wait_async (IdeSubprocess *self,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_return_if_fail (IDE_IS_SUBPROCESS (self));
g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
WRAP_INTERFACE_METHOD (self, wait_async, NULL, cancellable, callback, user_data);
}
gboolean
ide_subprocess_wait_finish (IdeSubprocess *self,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
return WRAP_INTERFACE_METHOD (self, wait_finish, FALSE, result, error);
}
static void
ide_subprocess_wait_check_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
IdeSubprocess *self = (IdeSubprocess *)object;
g_autoptr(GTask) task = user_data;
g_autoptr(GError) error = NULL;
IDE_ENTRY;
g_assert (IDE_IS_SUBPROCESS (self));
g_assert (G_IS_TASK (task));
if (!ide_subprocess_wait_finish (self, result, &error))
{
g_task_return_error (task, g_steal_pointer (&error));
IDE_EXIT;
}
if (ide_subprocess_get_if_signaled (self))
{
gint term_sig = ide_subprocess_get_term_sig (self);
g_task_return_new_error (task,
G_SPAWN_ERROR,
G_SPAWN_ERROR_FAILED,
"Child process killed by signal %d",
term_sig);
IDE_EXIT;
}
if (!ide_subprocess_check_exit_status (self, &error))
{
g_task_return_error (task, g_steal_pointer (&error));
IDE_EXIT;
}
g_task_return_boolean (task, TRUE);
IDE_EXIT;
}
void
ide_subprocess_wait_check_async (IdeSubprocess *self,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_autoptr(GTask) task = NULL;
IDE_ENTRY;
g_return_if_fail (IDE_IS_SUBPROCESS (self));
g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
task = g_task_new (self, cancellable, callback, user_data);
g_task_set_source_tag (task, ide_subprocess_wait_check_async);
ide_subprocess_wait_async (self,
cancellable,
ide_subprocess_wait_check_cb,
g_steal_pointer (&task));
IDE_EXIT;
}
gboolean
ide_subprocess_wait_check_finish (IdeSubprocess *self,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (G_IS_TASK (result), FALSE);
g_return_val_if_fail (g_task_is_valid (G_TASK (result), self), FALSE);
return g_task_propagate_boolean (G_TASK (result), error);
}
gboolean
ide_subprocess_get_successful (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
return WRAP_INTERFACE_METHOD (self, get_successful, FALSE);
}
gboolean
ide_subprocess_get_if_exited (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
return WRAP_INTERFACE_METHOD (self, get_if_exited, FALSE);
}
gint
ide_subprocess_get_exit_status (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), 0);
return WRAP_INTERFACE_METHOD (self, get_exit_status, 0);
}
gboolean
ide_subprocess_get_if_signaled (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
return WRAP_INTERFACE_METHOD (self, get_if_signaled, FALSE);
}
gint
ide_subprocess_get_term_sig (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), 0);
return WRAP_INTERFACE_METHOD (self, get_term_sig, 0);
}
gint
ide_subprocess_get_status (IdeSubprocess *self)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), 0);
return WRAP_INTERFACE_METHOD (self, get_status, 0);
}
void
ide_subprocess_send_signal (IdeSubprocess *self,
gint signal_num)
{
g_return_if_fail (IDE_IS_SUBPROCESS (self));
WRAP_INTERFACE_METHOD (self, send_signal, NULL, signal_num);
}
void
ide_subprocess_force_exit (IdeSubprocess *self)
{
g_return_if_fail (IDE_IS_SUBPROCESS (self));
WRAP_INTERFACE_METHOD (self, force_exit, NULL);
}
gboolean
ide_subprocess_communicate (IdeSubprocess *self,
GBytes *stdin_buf,
GCancellable *cancellable,
GBytes **stdout_buf,
GBytes **stderr_buf,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable), FALSE);
return WRAP_INTERFACE_METHOD (self, communicate, FALSE, stdin_buf, cancellable, stdout_buf, stderr_buf, error);
}
/**
* ide_subprocess_communicate_utf8:
* @self: an #IdeSubprocess
* @stdin_buf: (nullable): input to deliver to the subprocesses stdin stream
* @cancellable: (nullable): an optional #GCancellable
* @stdout_buf: (out) (nullable): an optional location for the stdout contents
* @stderr_buf: (out) (nullable): an optional location for the stderr contents
*
* This process acts identical to g_subprocess_communicate_utf8().
*
* Returns: %TRUE if successful; otherwise %FALSE and @error is set.
*
* Since: 3.32
*/
gboolean
ide_subprocess_communicate_utf8 (IdeSubprocess *self,
const gchar *stdin_buf,
GCancellable *cancellable,
gchar **stdout_buf,
gchar **stderr_buf,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable), FALSE);
return WRAP_INTERFACE_METHOD (self, communicate_utf8, FALSE, stdin_buf, cancellable, stdout_buf, stderr_buf, error);
}
/**
* ide_subprocess_communicate_async:
* @self: An #IdeSubprocess
* @stdin_buf: (nullable): a #GBytes to send to stdin or %NULL
* @cancellable: (nullable): a #GCancellable or %NULL
* @callback: A callback to complete the request
* @user_data: user data for @callback
*
* Asynchronously communicates with the the child process.
*
* There is no need to call ide_subprocess_wait() on the process if using
* this asynchronous operation as it will internally wait for the child
* to exit or be signaled.
*
* Ensure you've set the proper flags to ensure that you can write to stdin
* or read from stderr/stdout as necessary.
*
* Since: 3.32
*/
void
ide_subprocess_communicate_async (IdeSubprocess *self,
GBytes *stdin_buf,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_return_if_fail (IDE_IS_SUBPROCESS (self));
g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
WRAP_INTERFACE_METHOD (self, communicate_async, NULL, stdin_buf, cancellable, callback, user_data);
}
/**
* ide_subprocess_communicate_finish:
* @self: An #IdeSubprocess
* @result: a #GAsyncResult
* @stdout_buf: (out) (optional): A location for a #Bytes.
* @stderr_buf: (out) (optional): A location for a #Bytes.
* @error: a location for a #GError
*
* Finishes a request to ide_subprocess_communicate_async().
*
* Returns: %TRUE if successful; otherwise %FALSE and @error is set.
*
* Since: 3.32
*/
gboolean
ide_subprocess_communicate_finish (IdeSubprocess *self,
GAsyncResult *result,
GBytes **stdout_buf,
GBytes **stderr_buf,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
return WRAP_INTERFACE_METHOD (self, communicate_finish, FALSE, result, stdout_buf, stderr_buf, error);
}
/**
* ide_subprocess_communicate_utf8_async:
* @stdin_buf: (nullable): The data to send to stdin or %NULL
*
*
* Since: 3.32
*/
void
ide_subprocess_communicate_utf8_async (IdeSubprocess *self,
const gchar *stdin_buf,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_return_if_fail (IDE_IS_SUBPROCESS (self));
g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
WRAP_INTERFACE_METHOD (self, communicate_utf8_async, NULL, stdin_buf, cancellable, callback, user_data);
}
/**
* ide_subprocess_communicate_utf8_finish:
* @self: An #IdeSubprocess
* @result: a #GAsyncResult
* @stdout_buf: (out) (optional): A location for the UTF-8 formatted output string or %NULL
* @stderr_buf: (out) (optional): A location for the UTF-8 formatted output string or %NULL
* @error: A location for a #GError, or %NULL
*
* Returns: %TRUE if successful; otherwise %FALSE and @error is set.
*
* Since: 3.32
*/
gboolean
ide_subprocess_communicate_utf8_finish (IdeSubprocess *self,
GAsyncResult *result,
gchar **stdout_buf,
gchar **stderr_buf,
GError **error)
{
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
return WRAP_INTERFACE_METHOD (self, communicate_utf8_finish, FALSE, result, stdout_buf, stderr_buf, error);
}
gboolean
ide_subprocess_check_exit_status (IdeSubprocess *self,
GError **error)
{
gint exit_status;
g_return_val_if_fail (IDE_IS_SUBPROCESS (self), FALSE);
exit_status = ide_subprocess_get_exit_status (self);
return g_spawn_check_wait_status (exit_status, error);
}
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