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https://gitlab.freedesktop.org/dbus/dbus.git
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ab10ae902d
Write a "test-profile" that does echo client-server with threads; profile reveals lock contention, memcpy/realloc of buffers, and UTF-8 validation as hot spots. 20% of lock contention eliminated with dbus_atomic_inc/dec implementation on x86. Much remaining contention is global mempool locks for GList and DBusList. * dbus/dbus-sysdeps.c (_dbus_atomic_inc, _dbus_atomic_dec): add x86 implementation * dbus/dbus-connection.c (struct DBusConnection): use dbus_atomic_t for the reference count * dbus/dbus-message.c (struct DBusMessage): declare dbus_atomic_t values as volatile * configure.in: code to detect ability to use atomic integer operations in assembly, from GLib patch * dbus/dbus-internals.c (_dbus_verbose_real): call getpid every time, tired of it being wrong in threads and forked processes * glib/test-profile.c: a little program to bounce messages back and forth between threads and eat CPU * dbus/dbus-connection.c: add debug spew macros for debugging thread locks; include config.h at top; fix deadlock in dbus_connection_flush()
55 lines
No EOL
1.2 KiB
Makefile
55 lines
No EOL
1.2 KiB
Makefile
INCLUDES=-I$(top_srcdir) $(DBUS_CLIENT_CFLAGS) $(DBUS_GLIB_CFLAGS)
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dbusincludedir=$(includedir)/dbus-1.0/dbus
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lib_LTLIBRARIES=libdbus-glib-1.la
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dbusinclude_HEADERS= \
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dbus-glib.h
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libdbus_glib_1_la_SOURCES = \
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dbus-gmain.c \
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dbus-gthread.c
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libdbus_glib_1_la_LIBADD= $(DBUS_GLIB_LIBS) $(top_builddir)/dbus/libdbus-1.la
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if DBUS_BUILD_TESTS
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if HAVE_GLIB_THREADS
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THREAD_APPS=test-thread-server test-thread-client test-profile
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test_thread_server_SOURCES= \
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test-thread-server.c \
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test-thread.h
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test_thread_server_LDADD= $(DBUS_GLIB_THREADS_LIBS) $(top_builddir)/glib/libdbus-glib-1.la
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test_thread_client_SOURCES= \
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test-thread-client.c \
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test-thread.h
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test_thread_client_LDADD= $(DBUS_GLIB_THREADS_LIBS) $(top_builddir)/glib/libdbus-glib-1.la
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endif
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noinst_PROGRAMS= test-dbus-glib $(THREAD_APPS)
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test_dbus_glib_SOURCES= \
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test-dbus-glib.c
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test_dbus_glib_LDADD= $(top_builddir)/glib/libdbus-glib-1.la
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else
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### not building tests
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if HAVE_GLIB_THREADS
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noinst_PROGRAMS=test-profile
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endif
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endif
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if HAVE_GLIB_THREADS
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test_profile_SOURCES= \
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test-profile.c
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test_profile_LDADD= $(DBUS_GLIB_THREADS_LIBS) $(top_builddir)/glib/libdbus-glib-1.la
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endif |