Enable probes to work with Mac OS X Leopard and other OSes that will

support DTrace in the future.

Switch from using DTRACE_PROBEn macros to the dynamically generated macros.
Use "dtrace -h" to create a header file that contains the dynamically
generated macros to be used in the source code instead of the DTRACE_PROBEn
macros.  A dummy header file is generated for builds without DTrace support.

Author: Robert Lor <Robert.Lor@sun.com>

src/backend/Makefile

@@ -5,7 +5,7 @@
 # Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
 # Portions Copyright (c) 1994, Regents of the University of California
 #
-# $PostgreSQL: pgsql/src/backend/Makefile,v 1.127 2008/02/26 14:42:27 petere Exp $
+# $PostgreSQL: pgsql/src/backend/Makefile,v 1.128 2008/03/17 19:44:40 petere Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -20,9 +20,11 @@ SUBDIRS = access bootstrap catalog parser commands executor lib libpq \
 
 include $(srcdir)/common.mk
 
+ifeq ($(PORTNAME), solaris)
 ifeq ($(enable_dtrace), yes)
 LOCALOBJS += utils/probes.o
 endif
+endif
 
 OBJS = $(SUBDIROBJS) $(LOCALOBJS) $(top_builddir)/src/port/libpgport_srv.a
 
@@ -103,7 +105,7 @@ endif
 endif # aix
 
 # Update the commonly used headers before building the subdirectories
-$(SUBDIRS:%=%-recursive): $(top_builddir)/src/include/parser/parse.h $(top_builddir)/src/include/utils/fmgroids.h
+$(SUBDIRS:%=%-recursive): $(top_builddir)/src/include/parser/parse.h $(top_builddir)/src/include/utils/fmgroids.h $(top_builddir)/src/include/utils/probes.h
 
 
 # The postgres.o target is needed by the rule in Makefile.global that
@@ -122,6 +124,9 @@ $(srcdir)/parser/parse.h: parser/gram.y
 utils/fmgroids.h: utils/Gen_fmgrtab.sh $(top_srcdir)/src/include/catalog/pg_proc.h
 	$(MAKE) -C utils fmgroids.h
 
+utils/probes.h: utils/probes.d
+	$(MAKE) -C utils probes.h
+
 # Make symlinks for these headers in the include directory. That way
 # we can cut down on the -I options. Also, a symlink is automatically
 # up to date when we update the base file.
@@ -135,9 +140,15 @@ $(top_builddir)/src/include/utils/fmgroids.h: utils/fmgroids.h
 	cd $(dir $@) && rm -f $(notdir $@) && \
 	    $(LN_S) ../../../$(subdir)/utils/fmgroids.h .
 
+$(top_builddir)/src/include/utils/probes.h: utils/probes.h
+	cd $(dir $@) && rm -f $(notdir $@) && \
+	    $(LN_S) ../../../$(subdir)/utils/probes.h .
 
+
+ifeq ($(PORTNAME), solaris)
 utils/probes.o: utils/probes.d $(SUBDIROBJS)
 	$(DTRACE) $(DTRACEFLAGS) -G -s $(call expand_subsys,$^) -o $@
+endif
 
 
 ##########################################################################

src/backend/access/transam/xact.c

@@ -10,7 +10,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.259 2008/03/17 02:18:55 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/transam/xact.c,v 1.260 2008/03/17 19:44:41 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -46,6 +46,7 @@
 #include "utils/memutils.h"
 #include "utils/relcache.h"
 #include "utils/xml.h"
+#include "pg_trace.h"
 
 
 /*
@@ -1547,7 +1548,7 @@ StartTransaction(void)
 	Assert(MyProc->backendId == vxid.backendId);
 	MyProc->lxid = vxid.localTransactionId;
 
-	PG_TRACE1(transaction__start, vxid.localTransactionId);
+	TRACE_POSTGRESQL_TRANSACTION_START(vxid.localTransactionId);
 
 	/*
 	 * set transaction_timestamp() (a/k/a now()).  We want this to be the same
@@ -1674,7 +1675,7 @@ CommitTransaction(void)
 	 */
 	latestXid = RecordTransactionCommit();
 
-	PG_TRACE1(transaction__commit, MyProc->lxid);
+	TRACE_POSTGRESQL_TRANSACTION_COMMIT(MyProc->lxid);
 
 	/*
 	 * Let others know about no transaction in progress by me. Note that this
@@ -2084,7 +2085,7 @@ AbortTransaction(void)
 	 */
 	latestXid = RecordTransactionAbort(false);
 
-	PG_TRACE1(transaction__abort, MyProc->lxid);
+	TRACE_POSTGRESQL_TRANSACTION_ABORT(MyProc->lxid);
 
 	/*
 	 * Let others know about no transaction in progress by me. Note that this

src/backend/storage/lmgr/lock.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.182 2008/03/04 19:54:06 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/lock.c,v 1.183 2008/03/17 19:44:41 petere Exp $
  *
  * NOTES
  *	  A lock table is a shared memory hash table.  When
@@ -40,6 +40,7 @@
 #include "utils/memutils.h"
 #include "utils/ps_status.h"
 #include "utils/resowner.h"
+#include "pg_trace.h"
 
 
 /* This configuration variable is used to set the lock table size */
@@ -786,11 +787,11 @@ LockAcquire(const LOCKTAG *locktag,
 		 * Sleep till someone wakes me up.
 		 */
 
-		PG_TRACE2(lock__startwait, locktag->locktag_field2, lockmode);
+		TRACE_POSTGRESQL_LOCK_STARTWAIT(locktag->locktag_field2, lockmode);
 
 		WaitOnLock(locallock, owner);
 
-		PG_TRACE2(lock__endwait, locktag->locktag_field2, lockmode);
+		TRACE_POSTGRESQL_LOCK_ENDWAIT(locktag->locktag_field2, lockmode);
 
 		/*
 		 * NOTE: do not do any material change of state between here and

src/backend/storage/lmgr/lwlock.c

@@ -15,7 +15,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.50 2008/01/01 19:45:52 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.51 2008/03/17 19:44:41 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -28,6 +28,7 @@
 #include "storage/ipc.h"
 #include "storage/proc.h"
 #include "storage/spin.h"
+#include "pg_trace.h"
 
 
 /* We use the ShmemLock spinlock to protect LWLockAssign */
@@ -447,7 +448,7 @@ LWLockAcquire(LWLockId lockid, LWLockMode mode)
 		block_counts[lockid]++;
 #endif
 
-		PG_TRACE2(lwlock__startwait, lockid, mode);
+		TRACE_POSTGRESQL_LWLOCK_STARTWAIT(lockid, mode);
 
 		for (;;)
 		{
@@ -458,7 +459,7 @@ LWLockAcquire(LWLockId lockid, LWLockMode mode)
 			extraWaits++;
 		}
 
-		PG_TRACE2(lwlock__endwait, lockid, mode);
+		TRACE_POSTGRESQL_LWLOCK_ENDWAIT(lockid, mode);
 
 		LOG_LWDEBUG("LWLockAcquire", lockid, "awakened");
 
@@ -469,7 +470,7 @@ LWLockAcquire(LWLockId lockid, LWLockMode mode)
 	/* We are done updating shared state of the lock itself. */
 	SpinLockRelease(&lock->mutex);
 
-	PG_TRACE2(lwlock__acquire, lockid, mode);
+	TRACE_POSTGRESQL_LWLOCK_ACQUIRE(lockid, mode);
 
 	/* Add lock to list of locks held by this backend */
 	held_lwlocks[num_held_lwlocks++] = lockid;
@@ -540,13 +541,13 @@ LWLockConditionalAcquire(LWLockId lockid, LWLockMode mode)
 		/* Failed to get lock, so release interrupt holdoff */
 		RESUME_INTERRUPTS();
 		LOG_LWDEBUG("LWLockConditionalAcquire", lockid, "failed");
-		PG_TRACE2(lwlock__condacquire__fail, lockid, mode);
+		TRACE_POSTGRESQL_LWLOCK_CONDACQUIRE_FAIL(lockid, mode);
 	}
 	else
 	{
 		/* Add lock to list of locks held by this backend */
 		held_lwlocks[num_held_lwlocks++] = lockid;
-		PG_TRACE2(lwlock__condacquire, lockid, mode);
+		TRACE_POSTGRESQL_LWLOCK_CONDACQUIRE(lockid, mode);
 	}
 
 	return !mustwait;
@@ -631,7 +632,7 @@ LWLockRelease(LWLockId lockid)
 	/* We are done updating shared state of the lock itself. */
 	SpinLockRelease(&lock->mutex);
 
-	PG_TRACE1(lwlock__release, lockid);
+	TRACE_POSTGRESQL_LWLOCK_RELEASE(lockid);
 
 	/*
 	 * Awaken any waiters I removed from the queue.

src/backend/utils/Gen_dummy_probes.sed

@@ -0,0 +1,16 @@
+#-------------------------------------------------------------------------
+# sed script to create dummy probes.h file when dtrace is not available
+#
+# Copyright (c) 2008, PostgreSQL Global Development Group
+#
+# $PostgreSQL: pgsql/src/backend/utils/Gen_dummy_probes.sed,v 1.1 2008/03/17 19:44:41 petere Exp $
+#-------------------------------------------------------------------------
+
+/^probe /!d
+s/^probe \([^(]*\)\(.*\);/\1\2/
+s/__/_/g
+y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/
+s/^/#define TRACE_POSTGRESQL_/
+s/(INT, INT)/(INT1, INT2)/
+P
+s/(.*$/_ENABLED() (0)/

src/backend/utils/Makefile

@@ -1,7 +1,7 @@
 #
 # Makefile for utils
 #
-# $PostgreSQL: pgsql/src/backend/utils/Makefile,v 1.26 2008/02/19 10:30:08 petere Exp $
+# $PostgreSQL: pgsql/src/backend/utils/Makefile,v 1.27 2008/03/17 19:44:41 petere Exp $
 #
 
 subdir = src/backend/utils
@@ -13,12 +13,22 @@ SUBDIRS     = adt cache error fmgr hash init mb misc mmgr resowner sort time
 
 include $(top_srcdir)/src/backend/common.mk
 
-all: fmgroids.h
+all: fmgroids.h probes.h
 
 $(SUBDIRS:%=%-recursive): fmgroids.h
 
 fmgroids.h fmgrtab.c: Gen_fmgrtab.sh $(top_srcdir)/src/include/catalog/pg_proc.h
 	AWK='$(AWK)' $(SHELL) $< $(top_srcdir)/src/include/catalog/pg_proc.h
 
+probes.h: probes.d
+ifeq ($(enable_dtrace), yes)
+	$(DTRACE) -h -s $< -o $@.tmp
+	sed -e 's/POSTGRESQL_/TRACE_POSTGRESQL_/g' $@.tmp >$@
+	rm $@.tmp
+else
+	sed -f $(srcdir)/Gen_dummy_probes.sed $< >$@
+endif
+
+
 clean:
-	rm -f fmgroids.h fmgrtab.c
+	rm -f fmgroids.h fmgrtab.c probes.h

src/include/Makefile

@@ -4,7 +4,7 @@
 #
 # 'make install' installs whole contents of src/include.
 #
-# $PostgreSQL: pgsql/src/include/Makefile,v 1.23 2007/10/14 17:07:51 tgl Exp $
+# $PostgreSQL: pgsql/src/include/Makefile,v 1.24 2008/03/17 19:44:41 petere Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -60,7 +60,7 @@ uninstall:
 
 
 clean:
-	rm -f utils/fmgroids.h parser/parse.h
+	rm -f utils/fmgroids.h parser/parse.h utils/probes.h
 
 distclean maintainer-clean: clean
 	rm -f pg_config.h dynloader.h pg_config_os.h stamp-h

src/include/c.h

@@ -12,7 +12,7 @@
  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/c.h,v 1.223 2008/02/23 19:11:45 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/c.h,v 1.224 2008/03/17 19:44:41 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -57,7 +57,6 @@
 #include "pg_config_os.h"		/* must be before any system header files */
 #endif
 #include "postgres_ext.h"
-#include "pg_trace.h"
 
 #if _MSC_VER >= 1400
 #define errcode __msvc_errcode

src/include/pg_trace.h

@@ -5,50 +5,13 @@
  *
  *	Copyright (c) 2006-2008, PostgreSQL Global Development Group
  *
- *	$PostgreSQL: pgsql/src/include/pg_trace.h,v 1.3 2008/01/02 02:42:06 momjian Exp $
+ *	$PostgreSQL: pgsql/src/include/pg_trace.h,v 1.4 2008/03/17 19:44:41 petere Exp $
  * ----------
  */
 
 #ifndef PG_TRACE_H
 #define PG_TRACE_H
 
-#ifdef ENABLE_DTRACE
-
-#include <sys/sdt.h>
-
-/*
- * The PG_TRACE macros are mapped to the appropriate macros used by DTrace.
- *
- * Only one DTrace provider called "postgresql" will be used for PostgreSQL,
- * so the name is hard-coded here to avoid having to specify it in the
- * source code.
- */
-
-#define PG_TRACE(name) \
-	DTRACE_PROBE(postgresql, name)
-#define PG_TRACE1(name, arg1) \
-	DTRACE_PROBE1(postgresql, name, arg1)
-#define PG_TRACE2(name, arg1, arg2) \
-	DTRACE_PROBE2(postgresql, name, arg1, arg2)
-#define PG_TRACE3(name, arg1, arg2, arg3) \
-	DTRACE_PROBE3(postgresql, name, arg1, arg2, arg3)
-#define PG_TRACE4(name, arg1, arg2, arg3, arg4) \
-	DTRACE_PROBE4(postgresql, name, arg1, arg2, arg3, arg4)
-#define PG_TRACE5(name, arg1, arg2, arg3, arg4, arg5) \
-	DTRACE_PROBE5(postgresql, name, arg1, arg2, arg3, arg4, arg5)
-#else							/* not ENABLE_DTRACE */
-
-/*
- * Unless DTrace is explicitly enabled with --enable-dtrace, the PG_TRACE
- * macros will expand to no-ops.
- */
-
-#define PG_TRACE(name)
-#define PG_TRACE1(name, arg1)
-#define PG_TRACE2(name, arg1, arg2)
-#define PG_TRACE3(name, arg1, arg2, arg3)
-#define PG_TRACE4(name, arg1, arg2, arg3, arg4)
-#define PG_TRACE5(name, arg1, arg2, arg3, arg4, arg5)
-#endif   /* not ENABLE_DTRACE */
+#include "utils/probes.h"
 
 #endif   /* PG_TRACE_H */