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016829559e
g_type_ensure has a large comment saying _get_type shouldn't be marked with G_GNUC_CONST because it has side-effects on the first run, but it's OK if you consistently call g_type_ensure first. Unfortunately, this isn't accurate. GCC trunk (observed at r17-1725-ge259a182e1f100) now analyses points-to information more effectively and propagates its findings, so it sees the function modifies some global state, concludes that can't be possible (because of the const attribute), and deletes the stores. pure unfortunately is unsuitable for *_get_type too as it has a side-effect (writes to global memory). Mesa had a similar issue which I fixed recently [0]. glib and glibmm likely want the (not-yet-implemented) 'idempotent' attribute instead [1]. In fact, this exact problem is what motivated that request! :) ebassi mentions an alternative to the current setup as well, using atomics [2]. This problem has gone back many years but the compiler has finally fully outsmarted us here, so give in. [0] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/42361 [1] https://gcc.gnu.org/PR32911 [2] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4249#note_2583110 Fixes: https://gitlab.gnome.org/GNOME/glib/-/work_items/3984 Signed-off-by: Sam James <sam@gentoo.org>
170 lines
8.4 KiB
C
170 lines
8.4 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2012 Colin Walters <walters@verbum.org>
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Colin Walters <walters@verbum.org>
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*/
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#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
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#error "Only <gio/gio.h> can be included directly."
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#endif
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#ifndef __G_SUBPROCESS_H__
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#define __G_SUBPROCESS_H__
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#include <gio/giotypes.h>
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G_BEGIN_DECLS
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#define G_TYPE_SUBPROCESS (g_subprocess_get_type ())
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#define G_SUBPROCESS(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_SUBPROCESS, GSubprocess))
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#define G_IS_SUBPROCESS(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_SUBPROCESS))
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GIO_AVAILABLE_IN_2_40
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GType g_subprocess_get_type (void);
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/**** Core API ****/
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GIO_AVAILABLE_IN_2_40
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GSubprocess * g_subprocess_new (GSubprocessFlags flags,
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GError **error,
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const gchar *argv0,
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...) G_GNUC_NULL_TERMINATED;
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GIO_AVAILABLE_IN_2_40
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GSubprocess * g_subprocess_newv (const gchar * const *argv,
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GSubprocessFlags flags,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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GOutputStream * g_subprocess_get_stdin_pipe (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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GInputStream * g_subprocess_get_stdout_pipe (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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GInputStream * g_subprocess_get_stderr_pipe (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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const gchar * g_subprocess_get_identifier (GSubprocess *subprocess);
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#ifdef G_OS_UNIX
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GIO_AVAILABLE_IN_2_40
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void g_subprocess_send_signal (GSubprocess *subprocess,
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gint signal_num);
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#endif
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GIO_AVAILABLE_IN_2_40
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void g_subprocess_force_exit (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_wait (GSubprocess *subprocess,
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GCancellable *cancellable,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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void g_subprocess_wait_async (GSubprocess *subprocess,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_wait_finish (GSubprocess *subprocess,
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GAsyncResult *result,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_wait_check (GSubprocess *subprocess,
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GCancellable *cancellable,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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void g_subprocess_wait_check_async (GSubprocess *subprocess,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_wait_check_finish (GSubprocess *subprocess,
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GAsyncResult *result,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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gint g_subprocess_get_status (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_get_successful (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_get_if_exited (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gint g_subprocess_get_exit_status (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_get_if_signaled (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gint g_subprocess_get_term_sig (GSubprocess *subprocess);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_communicate (GSubprocess *subprocess,
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GBytes *stdin_buf,
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GCancellable *cancellable,
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GBytes **stdout_buf,
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GBytes **stderr_buf,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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void g_subprocess_communicate_async (GSubprocess *subprocess,
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GBytes *stdin_buf,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_communicate_finish (GSubprocess *subprocess,
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GAsyncResult *result,
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GBytes **stdout_buf,
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GBytes **stderr_buf,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_communicate_utf8 (GSubprocess *subprocess,
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const char *stdin_buf,
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GCancellable *cancellable,
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char **stdout_buf,
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char **stderr_buf,
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GError **error);
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GIO_AVAILABLE_IN_2_40
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void g_subprocess_communicate_utf8_async (GSubprocess *subprocess,
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const char *stdin_buf,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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GIO_AVAILABLE_IN_2_40
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gboolean g_subprocess_communicate_utf8_finish (GSubprocess *subprocess,
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GAsyncResult *result,
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char **stdout_buf,
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char **stderr_buf,
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GError **error);
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G_END_DECLS
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#endif /* __G_SUBPROCESS_H__ */
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