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4a2e1c3115
This patch adds a new "struct compiler_channels" to hold channels relating to the compiler that plugins (or diagnostic sinks) might want to subscribe to events for, accessed from the global gcc::context object, along with a new gcc/topics/ source subdirectory to hold strongly-typed publish/subscribe topics relating to the compiler. For now, there is just one: pass_events_channel, which, if there are any subscribers, issues notifications about passes starting/stopping on particular functions, using topics::pass_events, declared in topics/pass-events.h, but followup patches add more kinds of notification channel. A toy plugin in the testsuite shows how this could be used to build a progress notification UI for the compiler, and a followup patch uses the channel to (optionally) capture CFG information at each stage of optimization in machine-readable form into a SARIF sink. gcc/ChangeLog: * channels.h: New file. * context.cc: Define INCLUDE_LIST. Include "channels.h". (gcc::context::context): Create m_channels. (gcc::context::~context): Delete it. * context.h (struct compiler_channels): New forward decl. (gcc::context::get_channels): New accessor. (gcc::context::m_channels): New field. * passes.cc: Define INCLUDE_LIST. Include "topics/pass-events.h" and "channels.h". (execute_one_pass): If the global context's pass_events_channel has subscribers, publish before_pass and after_pass events to it. * topics/pass-events.h: New file. gcc/testsuite/ChangeLog: * gcc.dg/plugin/plugin.exp: Add progress_notifications_plugin.cc. * gcc.dg/plugin/progress_notifications_plugin.cc: New test plugin. Signed-off-by: David Malcolm <dmalcolm@redhat.com>
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/* context.cc - Holder for global state
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Copyright (C) 2013-2026 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#define INCLUDE_LIST
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "context.h"
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#include "pass_manager.h"
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#include "dumpfile.h"
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#include "realmpfr.h"
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#include "channels.h"
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/* The singleton holder of global state: */
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gcc::context *g;
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gcc::context::context ()
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: m_passes (NULL),
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m_dumps (new gcc::dump_manager ()),
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m_channels (new gcc::compiler_channels ())
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{
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have_offload = false;
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}
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gcc::context::~context ()
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{
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delete m_passes;
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delete m_dumps;
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delete m_channels;
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/* Release MPFR caches to avoid Valgrind leak reports. */
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mpfr_free_cache ();
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}
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