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author | John Baldwin <jhb@FreeBSD.org> | 2022-02-22 11:22:14 -0800 |
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committer | John Baldwin <jhb@FreeBSD.org> | 2022-02-22 11:22:14 -0800 |
commit | b146ba14d7019e046f5691ffbffa1d852b798c72 (patch) | |
tree | 864815823848712c9bd97a6503e5f34772e6b446 /gdb/inf-ptrace.c | |
parent | e05523bd2411bac0277da73556f4d01f6c7448aa (diff) | |
download | gdb-b146ba14d7019e046f5691ffbffa1d852b798c72.zip gdb-b146ba14d7019e046f5691ffbffa1d852b798c72.tar.gz gdb-b146ba14d7019e046f5691ffbffa1d852b798c72.tar.bz2 |
inf-ptrace: Add an event_pipe to be used for async mode in subclasses.
Subclasses of inf_ptrace_target have to opt-in to using the event_pipe
by implementing the can_async_p and async methods. For subclasses
which do this, inf_ptrace_target provides is_async_p, async_wait_fd
and closes the pipe in the close target method.
inf_ptrace_target also provides wrapper routines around the event pipe
(async_file_open, async_file_close, async_file_flush, and
async_file_mark) for use in target methods such as async.
inf_ptrace_target also exports a static async_file_mark_if_open
function which can be used in SIGCHLD signal handlers.
Diffstat (limited to 'gdb/inf-ptrace.c')
-rw-r--r-- | gdb/inf-ptrace.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gdb/inf-ptrace.c b/gdb/inf-ptrace.c index ebcc409..ea1fe45 100644 --- a/gdb/inf-ptrace.c +++ b/gdb/inf-ptrace.c @@ -48,6 +48,9 @@ gdb_ptrace (PTRACE_TYPE_ARG1 request, ptid_t ptid, PTRACE_TYPE_ARG3 addr, #endif } +/* The event pipe registered as a waitable file in the event loop. */ +event_pipe inf_ptrace_target::m_event_pipe; + inf_ptrace_target::~inf_ptrace_target () {} @@ -527,3 +530,15 @@ inf_ptrace_target::pid_to_str (ptid_t ptid) { return normal_pid_to_str (ptid); } + +/* Implement the "close" target method. */ + +void +inf_ptrace_target::close () +{ + /* Unregister from the event loop. */ + if (is_async_p ()) + async (0); + + inf_child_target::close (); +} |