aboutsummaryrefslogtreecommitdiffstats
path: root/lib/dtrace/c_src
diff options
context:
space:
mode:
Diffstat (limited to 'lib/dtrace/c_src')
-rw-r--r--lib/dtrace/c_src/Makefile4
-rw-r--r--lib/dtrace/c_src/Makefile.in152
-rw-r--r--lib/dtrace/c_src/dtrace.c174
-rw-r--r--lib/dtrace/c_src/dtrace_user.d53
4 files changed, 383 insertions, 0 deletions
diff --git a/lib/dtrace/c_src/Makefile b/lib/dtrace/c_src/Makefile
new file mode 100644
index 0000000000..f3320bb766
--- /dev/null
+++ b/lib/dtrace/c_src/Makefile
@@ -0,0 +1,4 @@
+#
+# Invoke with GNU make or clearmake -C gnu.
+#
+include $(ERL_TOP)/make/run_make.mk
diff --git a/lib/dtrace/c_src/Makefile.in b/lib/dtrace/c_src/Makefile.in
new file mode 100644
index 0000000000..ed13684a95
--- /dev/null
+++ b/lib/dtrace/c_src/Makefile.in
@@ -0,0 +1,152 @@
+#
+# %CopyrightBegin%
+#
+# Copyright Scott Lystig Fritchie 2011. 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%
+#
+include $(ERL_TOP)/make/target.mk
+include $(ERL_TOP)/make/$(TARGET)/otp.mk
+include $(ERL_TOP)/make/$(TARGET)/otp_ded.mk
+
+# ----------------------------------------------------
+# Items from top-level configure
+# ----------------------------------------------------
+DTRACE_ENABLED=@DTRACE_ENABLED@
+DTRACE_ENABLED_2STEP=@DTRACE_ENABLED_2STEP@
+
+# ----------------------------------------------------
+# Application version
+# ----------------------------------------------------
+include ../vsn.mk
+VSN=$(DTRACE_VSN)
+
+# ----------------------------------------------------
+# The following variables differ between systems.
+# Set by configure.
+# ----------------------------------------------------
+CC = $(DED_CC)
+LD = $(DED_LD)
+SHELL = /bin/sh
+LIBS = $(DED_LIBS)
+LDFLAGS += $(DED_LDFLAGS)
+CFLAGS = $(DED_CFLAGS)
+
+DTRACE_LIBNAME = dtrace
+
+
+INCLUDES = $(DED_INCLUDES)
+
+ifeq ($(TYPE),debug)
+TYPEMARKER = .debug
+TYPE_FLAGS = $(subst -O3,,$(subst -O2,,$(CFLAGS))) -DDEBUG
+else
+ifeq ($(TYPE),valgrind)
+TYPEMARKER = .valgrind
+TYPE_FLAGS = $(subst -O3,,$(subst -O2,,$(CFLAGS))) -DVALGRIND
+else
+TYPEMARKER =
+TYPE_FLAGS = $(CFLAGS)
+endif
+endif
+
+ALL_CFLAGS = $(TYPE_FLAGS) $(INCLUDES) -I$(OBJDIR) \
+ -I$(ERL_TOP)/erts/emulator/$(TARGET)
+
+# ----------------------------------------------------
+# Release directory specification
+# ----------------------------------------------------
+RELSYSDIR = $(RELEASE_PATH)/lib/dtrace-$(VSN)
+
+# ----------------------------------------------------
+# Misc Macros
+# ----------------------------------------------------
+OBJS = $(OBJDIR)/dtrace$(TYPEMARKER).o
+## NIF_MAKEFILE = $(PRIVDIR)/Makefile
+
+# Higher-level makefiles says that we can only compile on UNIX flavors
+NIF_LIB = $(LIBDIR)/dtrace$(TYPEMARKER).so
+
+ifeq ($(HOST_OS),)
+HOST_OS := $(shell $(ERL_TOP)/erts/autoconf/config.guess)
+endif
+
+# ----------------------------------------------------
+# Targets
+# ----------------------------------------------------
+
+debug opt valgrind: $(OBJDIR) $(LIBDIR) $(NIF_LIB)
+
+ifdef DTRACE_ENABLED
+DTRACE_USER_HEADER=$(OBJDIR)/dtrace_user.h
+$(OBJDIR)/dtrace_user.h: ./dtrace_user.d
+ dtrace -h -C $(INCLUDES) \
+ -s ./dtrace_user.d \
+ -o ./dtrace_user.tmp
+ sed -e '/^#define[ ]*ERLANG_[A-Z0-9_]*(.*)/y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/' ./dtrace_user.tmp > $@
+ rm ./dtrace_user.tmp
+else
+DTRACE_USER_HEADER=
+endif
+
+ifdef DTRACE_ENABLED_2STEP
+OBJS += $(OBJDIR)/dtrace_user.o
+$(OBJDIR)/dtrace_user.o: $(OBJS) $(OBJDIR)/dtrace_user.h
+ touch $(OBJDIR)/erlang_dtrace.c
+ $(CC) $(CFLAGS) -c -o $@ $(OBJDIR)/erlang_dtrace.c
+ # The object file created above is immediately clobbered below.
+ # But creating it above avoids chicken-and-egg problem with OBJS
+ dtrace -G -C \
+ -s ./dtrace_user.d \
+ -o $@ $(OBJS)
+endif
+
+$(OBJDIR):
+ -@mkdir -p $(OBJDIR)
+
+$(LIBDIR):
+ -@mkdir -p $(LIBDIR)
+
+$(OBJDIR)/%$(TYPEMARKER).o: %.c $(DTRACE_USER_HEADER)
+ $(INSTALL_DIR) $(OBJDIR)
+ $(CC) -c -o $@ $(ALL_CFLAGS) $<
+
+$(LIBDIR)/dtrace$(TYPEMARKER).so: $(OBJS)
+ $(INSTALL_DIR) $(LIBDIR)
+ $(LD) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+
+clean:
+ rm -f $(LIBDIR)/dtrace.so
+ rm -f $(LIBDIR)/dtrace.debug.so
+ rm -f $(LIBDIR)/dtrace.valgrind.so
+ rm -f $(OBJDIR)/dtrace.o
+ rm -f $(OBJDIR)/dtrace.debug.o
+ rm -f $(OBJDIR)/dtrace.valgrind.o
+ rm -f core *~
+
+docs:
+
+# ----------------------------------------------------
+# Release Target
+# ----------------------------------------------------
+include $(ERL_TOP)/make/otp_release_targets.mk
+
+release_spec: opt
+ $(INSTALL_DIR) $(RELSYSDIR)/priv/obj
+ $(INSTALL_DIR) $(RELSYSDIR)/priv/lib
+ # $(INSTALL_DATA) $(NIF_MAKEFILE) $(RELSYSDIR)/priv/obj
+ $(INSTALL_PROGRAM) $(OBJS) $(RELSYSDIR)/priv/obj
+ $(INSTALL_PROGRAM) $(NIF_LIB) $(RELSYSDIR)/priv/lib
+
+release_docs_spec:
diff --git a/lib/dtrace/c_src/dtrace.c b/lib/dtrace/c_src/dtrace.c
new file mode 100644
index 0000000000..c9d25ece9c
--- /dev/null
+++ b/lib/dtrace/c_src/dtrace.c
@@ -0,0 +1,174 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Scott Lystig Fritchie 2011. 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%
+ */
+
+/*
+ * Purpose: Dynamically loadable NIF library for DTrace
+ */
+
+
+#include "erl_nif.h"
+#include "config.h"
+#include "sys.h"
+#define DTRACE_DRIVER_SKIP_FUNC_DECLARATIONS
+#include "dtrace-wrapper.h"
+#ifdef HAVE_DTRACE
+#include "dtrace_user.h"
+#endif
+
+void dtrace_nifenv_str(ErlNifEnv *env, char *process_buf);
+void get_string_maybe(ErlNifEnv *env, const ERL_NIF_TERM term, char **ptr, char *buf, int bufsiz);
+
+#ifdef VALGRIND
+ # include <valgrind/memcheck.h>
+#endif
+
+#ifdef __GNUC__
+ # define INLINE __inline__
+#else
+ # define INLINE
+#endif
+
+#define MESSAGE_BUFSIZ 1024
+
+/* NIF interface declarations */
+static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info);
+
+/* The NIFs: */
+static ERL_NIF_TERM available(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM user_trace_s1(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM user_trace_i4s4(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+static ErlNifFunc nif_funcs[] = {
+ {"available", 0, available},
+ {"user_trace_s1", 1, user_trace_s1},
+ {"user_trace_i4s4", 9, user_trace_i4s4}
+};
+
+ERL_NIF_INIT(dtrace, nif_funcs, load, NULL, NULL, NULL)
+
+static ERL_NIF_TERM atom_true;
+static ERL_NIF_TERM atom_false;
+static ERL_NIF_TERM atom_error;
+static ERL_NIF_TERM atom_not_available;
+static ERL_NIF_TERM atom_badarg;
+static ERL_NIF_TERM atom_ok;
+
+static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
+{
+ atom_true = enif_make_atom(env,"true");
+ atom_false = enif_make_atom(env,"false");
+ atom_error = enif_make_atom(env,"error");
+ atom_not_available = enif_make_atom(env,"not_available");
+ atom_badarg = enif_make_atom(env,"badarg");
+ atom_ok = enif_make_atom(env,"ok");
+
+ return 0;
+}
+
+static ERL_NIF_TERM available(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+#ifdef HAVE_DTRACE
+ return atom_true;
+#else
+ return atom_false;
+#endif
+}
+
+static ERL_NIF_TERM user_trace_s1(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+#ifdef HAVE_DTRACE
+ ErlNifBinary message_bin;
+ DTRACE_CHARBUF(messagebuf, MESSAGE_BUFSIZ + 1);
+
+ if (DTRACE_ENABLED(user_trace_s1)) {
+ if (!enif_inspect_iolist_as_binary(env, argv[0], &message_bin) ||
+ message_bin.size > MESSAGE_BUFSIZ) {
+ return atom_badarg;
+ }
+ memcpy(messagebuf, (char *) message_bin.data, message_bin.size);
+ messagebuf[message_bin.size] = '\0';
+ DTRACE1(user_trace_s1, messagebuf);
+ return atom_true;
+ } else {
+ return atom_false;
+ }
+#else
+ return atom_error;
+#endif
+}
+
+void
+get_string_maybe(ErlNifEnv *env,
+ const ERL_NIF_TERM term, char **ptr, char *buf, int bufsiz)
+{
+ ErlNifBinary str_bin;
+
+ if (!enif_inspect_iolist_as_binary(env, term, &str_bin) ||
+ str_bin.size > bufsiz) {
+ *ptr = NULL;
+ } else {
+ memcpy(buf, (char *) str_bin.data, str_bin.size);
+ buf[str_bin.size] = '\0';
+ *ptr = buf;
+ }
+}
+
+static ERL_NIF_TERM user_trace_i4s4(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+#ifdef HAVE_DTRACE
+ DTRACE_CHARBUF(procbuf, 32 + 1);
+ DTRACE_CHARBUF(user_tagbuf, MESSAGE_BUFSIZ + 1);
+ char *utbuf = NULL;
+ ErlNifSInt64 i1, i2, i3, i4;
+ DTRACE_CHARBUF(messagebuf1, MESSAGE_BUFSIZ + 1);
+ DTRACE_CHARBUF(messagebuf2, MESSAGE_BUFSIZ + 1);
+ DTRACE_CHARBUF(messagebuf3, MESSAGE_BUFSIZ + 1);
+ DTRACE_CHARBUF(messagebuf4, MESSAGE_BUFSIZ + 1);
+ char *mbuf1 = NULL, *mbuf2 = NULL, *mbuf3 = NULL, *mbuf4 = NULL;
+
+ if (DTRACE_ENABLED(user_trace_i4s4)) {
+ dtrace_nifenv_str(env, procbuf);
+ get_string_maybe(env, argv[0], &utbuf,
+ user_tagbuf, sizeof(user_tagbuf)-1);
+ if (! enif_get_int64(env, argv[1], &i1))
+ i1 = 0;
+ if (! enif_get_int64(env, argv[2], &i2))
+ i2 = 0;
+ if (! enif_get_int64(env, argv[3], &i3))
+ i3 = 0;
+ if (! enif_get_int64(env, argv[4], &i4))
+ i4 = 0;
+ get_string_maybe(env, argv[5], &mbuf1,
+ messagebuf1, sizeof(messagebuf1)-1);
+ get_string_maybe(env, argv[6], &mbuf2,
+ messagebuf2, sizeof(messagebuf2)-1);
+ get_string_maybe(env, argv[7], &mbuf3,
+ messagebuf3, sizeof(messagebuf3)-1);
+ get_string_maybe(env, argv[8], &mbuf4,
+ messagebuf4, sizeof(messagebuf4)-1);
+ DTRACE10(user_trace_i4s4, procbuf, utbuf,
+ i1, i2, i3, i4, mbuf1, mbuf2, mbuf3, mbuf4);
+ return atom_true;
+ } else {
+ return atom_false;
+ }
+#else
+ return atom_error;
+#endif
+}
diff --git a/lib/dtrace/c_src/dtrace_user.d b/lib/dtrace/c_src/dtrace_user.d
new file mode 100644
index 0000000000..45d3ef3b66
--- /dev/null
+++ b/lib/dtrace/c_src/dtrace_user.d
@@ -0,0 +1,53 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Scott Lystig Fritchie 2011.
+ * 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%
+ */
+
+provider erlang {
+ /**
+ * Send a single string to a probe.
+ *
+ * @param NUL-terminated string
+ */
+ probe user_trace__s1(char* message);
+
+ /**
+ * Multi-purpose probe: up to 4 NUL-terminated strings and 4
+ * 64-bit integer arguments.
+ *
+ * @param proc, the PID (string form) of the sending process
+ * @param user_tag, the user tag of the sender
+ * @param i1, integer
+ * @param i2, integer
+ * @param i3, integer
+ * @param i4, integer
+ * @param s1, string/iolist. D's arg6 is NULL if not given by Erlang
+ * @param s2, string/iolist. D's arg7 is NULL if not given by Erlang
+ * @param s3, string/iolist. D's arg8 is NULL if not given by Erlang
+ * @param s4, string/iolist. D's arg9 is NULL if not given by Erlang
+ */
+ probe user_trace__i4s4(char *proc, char *user_tag,
+ int i1, int i2, int i3, int i4,
+ char *s1, char *s2, char *s3, char *s4);
+};
+
+#pragma D attributes Evolving/Evolving/Common provider erlang provider
+#pragma D attributes Private/Private/Common provider erlang module
+#pragma D attributes Private/Private/Common provider erlang function
+#pragma D attributes Evolving/Evolving/Common provider erlang name
+#pragma D attributes Evolving/Evolving/Common provider erlang args
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-02 04:06:50 +0000