The Compiled Method Load Record (cmlr) is JDK specific interface to access JVM stack info. This makes the jvmti agent code not compile under another jdk, which does not support that.
Separating jvmti cmlr check into special feature check, and adding HAVE_JVMTI_CMLR macro to indicate that. Mark cmlr code in jvmti/libjvmti.c with HAVE_JVMTI_CMLR, so we can compile it on system without cmlr support. This change makes the jvmti compile with java-1.8.0-ibm package. It's without the line numbers support, but the rest works. Adding NO_JVMTI_CMLR compile variable for testing. Cc: Gustavo Luiz Duarte (IBM) <[email protected]> Cc: Ben Gainey <[email protected]> Cc: Stephane Eranian <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Jiri Olsa <[email protected]> --- tools/build/feature/Makefile | 4 ++++ tools/build/feature/test-jvmti-cmlr.c | 11 +++++++++++ tools/build/feature/test-jvmti.c | 1 - tools/perf/Makefile.config | 7 +++++++ tools/perf/Makefile.perf | 3 +++ tools/perf/jvmti/libjvmti.c | 12 ++++++++++++ 6 files changed, 37 insertions(+), 1 deletion(-) create mode 100644 tools/build/feature/test-jvmti-cmlr.c diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 0516259be70f..2c3c29aee7da 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -53,6 +53,7 @@ FILES= \ test-sdt.bin \ test-cxx.bin \ test-jvmti.bin \ + test-jvmti-cmlr.bin \ test-sched_getcpu.bin \ test-setns.bin \ test-libopencsd.bin \ @@ -259,6 +260,9 @@ $(OUTPUT)test-cxx.bin: $(OUTPUT)test-jvmti.bin: $(BUILD) +$(OUTPUT)test-jvmti-cmlr.bin: + $(BUILD) + $(OUTPUT)test-llvm.bin: $(BUILDXX) -std=gnu++11 \ -I$(shell $(LLVM_CONFIG) --includedir) \ diff --git a/tools/build/feature/test-jvmti-cmlr.c b/tools/build/feature/test-jvmti-cmlr.c new file mode 100644 index 000000000000..c27b5b71a0f6 --- /dev/null +++ b/tools/build/feature/test-jvmti-cmlr.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <jvmti.h> +#include <jvmticmlr.h> + +int main(void) +{ + jvmtiCompiledMethodLoadInlineRecord rec __attribute__((unused)); + jvmtiCompiledMethodLoadRecordHeader hdr __attribute__((unused)); + PCStackInfo p __attribute__((unused)); + return 0; +} diff --git a/tools/build/feature/test-jvmti.c b/tools/build/feature/test-jvmti.c index 5cf31192f204..799916d2e3e3 100644 --- a/tools/build/feature/test-jvmti.c +++ b/tools/build/feature/test-jvmti.c @@ -1,6 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 #include <jvmti.h> -#include <jvmticmlr.h> int main(void) { diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index e30d20fb482d..16b30a3b7c74 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -847,6 +847,13 @@ ifndef NO_JVMTI $(call feature_check,jvmti) ifeq ($(feature-jvmti), 1) $(call detected_var,JDIR) + ifndef NO_JVMTI_CMLR + FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti) + $(call feature_check,jvmti-cmlr) + ifeq ($(feature-jvmti-cmlr), 1) + CFLAGS += -DHAVE_JVMTI_CMLR + endif + endif # NO_JVMTI_CMLR else $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel) NO_JVMTI := 1 diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index caf389051e90..1eaab256ecf1 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -95,6 +95,9 @@ include ../scripts/utilities.mak # # Define NO_JVMTI if you do not want jvmti agent built # +# Define NO_JVMTI_CMLR (debug only) if you do not want to process CMLR +# data for java source lines. +# # Define LIBCLANGLLVM if you DO want builtin clang and llvm support. # When selected, pass LLVM_CONFIG=/path/to/llvm-config to `make' if # llvm-config is not in $PATH. diff --git a/tools/perf/jvmti/libjvmti.c b/tools/perf/jvmti/libjvmti.c index 6add3e982614..aea7b1fe85aa 100644 --- a/tools/perf/jvmti/libjvmti.c +++ b/tools/perf/jvmti/libjvmti.c @@ -6,7 +6,9 @@ #include <stdlib.h> #include <err.h> #include <jvmti.h> +#ifdef HAVE_JVMTI_CMLR #include <jvmticmlr.h> +#endif #include <limits.h> #include "jvmti_agent.h" @@ -27,6 +29,7 @@ static void print_error(jvmtiEnv *jvmti, const char *msg, jvmtiError ret) } } +#ifdef HAVE_JVMTI_CMLR static jvmtiError do_get_line_numbers(jvmtiEnv *jvmti, void *pc, jmethodID m, jint bci, jvmti_line_info_t *tab, jint *nr) @@ -125,6 +128,15 @@ get_line_numbers(jvmtiEnv *jvmti, const void *compile_info, jvmti_line_info_t ** *nr_lines = lines_total; return JVMTI_ERROR_NONE; } +#else /* HAVE_JVMTI_CMLR */ + +static jvmtiError +get_line_numbers(jvmtiEnv *jvmti __maybe_unused, const void *compile_info __maybe_unused, + jvmti_line_info_t **tab __maybe_unused, int *nr_lines __maybe_unused) +{ + return JVMTI_ERROR_NONE; +} +#endif /* HAVE_JVMTI_CMLR */ static void copy_class_filename(const char * class_sign, const char * file_name, char * result, size_t max_length) -- 2.17.2
