Implement true asynchronous signaling between processes and ports

1 files changed, 138 insertions, 0 deletions

diff --git a/erts/emulator/beam/erl_trace.h b/erts/emulator/beam/erl_trace.h
new file mode 100644
index 0000000000..0d6df699ff
--- /dev/null
+++ b/erts/emulator/beam/erl_trace.h
@@ -0,0 +1,138 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2012. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+
+#ifndef ERL_TRACE_H__
+#define ERL_TRACE_H__
+
+struct binary;
+
+/* erl_bif_trace.c */
+Eterm erl_seq_trace_info(Process *p, Eterm arg1);
+void erts_system_monitor_clear(Process *c_p);
+void erts_system_profile_clear(Process *c_p);
+
+/* erl_trace.c */
+void erts_init_trace(void);
+void erts_trace_check_exiting(Eterm exiting);
+Eterm erts_set_system_seq_tracer(Process *c_p,
+				 ErtsProcLocks c_p_locks,
+				 Eterm new);
+Eterm erts_get_system_seq_tracer(void);
+void erts_change_default_tracing(int setflags, Uint *flagsp, Eterm *tracerp);
+void erts_get_default_tracing(Uint *flagsp, Eterm *tracerp);
+void erts_set_system_monitor(Eterm monitor);
+Eterm erts_get_system_monitor(void);
+
+#ifdef ERTS_SMP
+void erts_check_my_tracer_proc(Process *);
+void erts_block_sys_msg_dispatcher(void);
+void erts_release_sys_msg_dispatcher(void);
+void erts_foreach_sys_msg_in_q(void (*func)(Eterm,
+					    Eterm,
+					    Eterm,
+					    ErlHeapFragment *));
+void erts_queue_error_logger_message(Eterm, Eterm, ErlHeapFragment *);
+#endif
+
+void erts_send_sys_msg_proc(Eterm, Eterm, Eterm, ErlHeapFragment *);
+void trace_send(Process*, Eterm, Eterm);
+void trace_receive(Process*, Eterm);
+Uint32 erts_call_trace(Process *p, BeamInstr mfa[], struct binary *match_spec, Eterm* args,
+		       int local, Eterm *tracer_pid);
+void erts_trace_return(Process* p, BeamInstr* fi, Eterm retval, Eterm *tracer_pid);
+void erts_trace_exception(Process* p, BeamInstr mfa[], Eterm class, Eterm value,
+			  Eterm *tracer);
+void erts_trace_return_to(Process *p, BeamInstr *pc);
+void trace_sched(Process*, Eterm);
+void trace_proc(Process*, Process*, Eterm, Eterm);
+void trace_proc_spawn(Process*, Eterm pid, Eterm mod, Eterm func, Eterm args);
+void save_calls(Process *p, Export *);
+void trace_gc(Process *p, Eterm what);
+/* port tracing */
+void trace_virtual_sched(Process*, Eterm);
+void trace_sched_ports(Port *pp, Eterm);
+void trace_sched_ports_where(Port *pp, Eterm, Eterm);
+void trace_port(Port *, Eterm what, Eterm data);
+void trace_port_open(Port *, Eterm calling_pid, Eterm drv_name);
+
+/* system_profile */
+void erts_set_system_profile(Eterm profile);
+Eterm erts_get_system_profile(void);
+void profile_scheduler(Eterm scheduler_id, Eterm);
+void profile_scheduler_q(Eterm scheduler_id, Eterm state, Eterm no_schedulers, Uint Ms, Uint s, Uint us);
+void profile_runnable_proc(Process* p, Eterm status);
+void profile_runnable_port(Port* p, Eterm status);
+void erts_system_profile_setup_active_schedulers(void);
+
+/* system_monitor */
+void monitor_long_gc(Process *p, Uint time);
+void monitor_large_heap(Process *p);
+void monitor_generic(Process *p, Eterm type, Eterm spec);
+Uint erts_trace_flag2bit(Eterm flag);
+int erts_trace_flags(Eterm List, 
+		 Uint *pMask, Eterm *pTracer, int *pCpuTimestamp);
+Eterm erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr *I);
+
+#ifdef ERTS_SMP
+void erts_send_pending_trace_msgs(ErtsSchedulerData *esdp);
+#define ERTS_SMP_CHK_PEND_TRACE_MSGS(ESDP)				\
+do {									\
+    if ((ESDP)->pending_trace_msgs)					\
+	erts_send_pending_trace_msgs((ESDP));				\
+} while (0)
+#else
+#define ERTS_SMP_CHK_PEND_TRACE_MSGS(ESDP)
+#endif
+
+#define seq_trace_output(token, msg, type, receiver, process) \
+seq_trace_output_generic((token), (msg), (type), (receiver), (process), NIL)
+#define seq_trace_output_exit(token, msg, type, receiver, exitfrom) \
+seq_trace_output_generic((token), (msg), (type), (receiver), NULL, (exitfrom))
+void seq_trace_output_generic(Eterm token, Eterm msg, Uint type, 
+			      Eterm receiver, Process *process, Eterm exitfrom);
+
+int seq_trace_update_send(Process *process);
+
+Eterm erts_seq_trace(Process *process, 
+		     Eterm atom_type, Eterm atom_true_or_false, 
+		     int build_result);
+
+struct trace_pattern_flags {
+    unsigned int breakpoint : 1; /* Set if any other is set */
+    unsigned int local      : 1; /* Local call trace breakpoint */
+    unsigned int meta       : 1; /* Metadata trace breakpoint */
+    unsigned int call_count : 1; /* Fast call count breakpoint */
+    unsigned int call_time  : 1; /* Fast call time breakpoint */
+};
+extern const struct trace_pattern_flags erts_trace_pattern_flags_off;
+extern int erts_call_time_breakpoint_tracing;
+int erts_set_trace_pattern(Eterm* mfa, int specified, 
+			   struct binary* match_prog_set, struct binary *meta_match_prog_set,
+			   int on, struct trace_pattern_flags,
+			   Eterm meta_tracer_pid);
+void
+erts_get_default_trace_pattern(int *trace_pattern_is_on,
+			       struct binary **match_spec,
+			       struct binary **meta_match_spec,
+			       struct trace_pattern_flags *trace_pattern_flags,
+			       Eterm *meta_tracer_pid);
+void erts_bif_trace_init(void);
+
+#endif /* ERL_TRACE_H__ */