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# Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
IF(CMAKE_SYSTEM_NAME MATCHES "SunOS" AND CMAKE_COMPILER_IS_GNUCXX
AND CMAKE_SIZEOF_VOID_P EQUAL 4)
IF(NOT DEFINED BUGGY_GCC_NO_DTRACE_MODULES)
EXECUTE_PROCESS(
COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1} --version
OUTPUT_VARIABLE out)
IF(out MATCHES "3.4.6")
# This gcc causes crashes in dlopen() for dtraced shared libs,
# while standard shipped with Solaris10 3.4.3 is ok
SET(BUGGY_GCC_NO_DTRACE_MODULES 1 CACHE INTERNAL "")
ELSE()
SET(BUGGY_GCC_NO_DTRACE_MODULES 0 CACHE INTERNAL "")
ENDIF()
ENDIF()
ENDIF()
# Check if OS supports DTrace
MACRO(CHECK_DTRACE)
FIND_PROGRAM(DTRACE dtrace)
MARK_AS_ADVANCED(DTRACE)
IF(CMAKE_C_COMPILER MATCHES "ccache" AND CMAKE_SYSTEM_NAME MATCHES "Linux")
# dtrace fails on fedora if CC='ccache gcc' is used
SET(BUGGY_LINUX_DTRACE 1)
ENDIF()
# On FreeBSD, dtrace does not handle userland tracing yet
IF(DTRACE AND NOT CMAKE_SYSTEM_NAME MATCHES "FreeBSD"
AND NOT BUGGY_GCC_NO_DTRACE_MODULES
AND NOT BUGGY_LINUX_DTRACE
AND NOT CMAKE_SYSTEM_NAME MATCHES "SunOS")
SET(ENABLE_DTRACE ON CACHE BOOL "Enable dtrace")
ENDIF()
# On GNU/Hurd, dtrace is not supported
IF(DTRACE AND CMAKE_SYSTEM_NAME MATCHES "GNU")
SET(ENABLE_DTRACE OFF CACHE BOOL "Disable dtrace")
ENDIF()
SET(HAVE_DTRACE ${ENABLE_DTRACE})
IF(CMAKE_SYSTEM_NAME MATCHES "SunOS")
IF(CMAKE_SIZEOF_VOID_P EQUAL 4)
SET(DTRACE_FLAGS -32 CACHE INTERNAL "DTrace architecture flags")
ELSE()
SET(DTRACE_FLAGS -64 CACHE INTERNAL "DTrace architecture flags")
ENDIF()
ENDIF()
ENDMACRO()
CHECK_DTRACE()
# Produce a header file with
# DTrace macros
MACRO (DTRACE_HEADER provider header header_no_dtrace)
IF(ENABLE_DTRACE)
ADD_CUSTOM_COMMAND(
OUTPUT ${header} ${header_no_dtrace}
COMMAND ${DTRACE} -h -s ${provider} -o ${header}
COMMAND perl ${CMAKE_SOURCE_DIR}/scripts/dheadgen.pl -f ${provider} > ${header_no_dtrace}
DEPENDS ${provider}
)
ENDIF()
ENDMACRO()
# Create provider headers
IF(ENABLE_DTRACE)
CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/include/probes_mysql.d.base
${CMAKE_BINARY_DIR}/include/probes_mysql.d COPYONLY)
DTRACE_HEADER(
${CMAKE_BINARY_DIR}/include/probes_mysql.d
${CMAKE_BINARY_DIR}/include/probes_mysql_dtrace.h
${CMAKE_BINARY_DIR}/include/probes_mysql_nodtrace.h
)
ADD_CUSTOM_TARGET(gen_dtrace_header
DEPENDS
${CMAKE_BINARY_DIR}/include/probes_mysql.d
${CMAKE_BINARY_DIR}/include/probes_mysql_dtrace.h
${CMAKE_BINARY_DIR}/include/probes_mysql_nodtrace.h
)
ELSE()
CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/include/probes_mysql_nodtrace.h.in
${CMAKE_BINARY_DIR}/include/probes_mysql_nodtrace.h COPYONLY)
ENDIF()
FUNCTION(DTRACE_INSTRUMENT target)
IF(BUGGY_GCC_NO_DTRACE_MODULES)
GET_TARGET_PROPERTY(target_type ${target} TYPE)
IF(target_type MATCHES "MODULE_LIBRARY")
RETURN()
ENDIF()
ENDIF()
IF(ENABLE_DTRACE)
ADD_DEPENDENCIES(${target} gen_dtrace_header)
# Invoke dtrace to generate object file and link it together with target.
IF(CMAKE_SYSTEM_NAME MATCHES "SunOS")
SET(objdir ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${target}.dir)
SET(outfile ${objdir}/${target}_dtrace.o)
GET_TARGET_PROPERTY(target_type ${target} TYPE)
ADD_CUSTOM_COMMAND(
TARGET ${target} PRE_LINK
COMMAND ${CMAKE_COMMAND}
-DDTRACE=${DTRACE}
-DOUTFILE=${outfile}
-DDFILE=${CMAKE_BINARY_DIR}/include/probes_mysql.d
-DDTRACE_FLAGS=${DTRACE_FLAGS}
-DDIRS=.
-DTYPE=${target_type}
-P ${CMAKE_SOURCE_DIR}/cmake/dtrace_prelink.cmake
WORKING_DIRECTORY ${objdir}
)
ELSEIF(CMAKE_SYSTEM_NAME MATCHES "Linux")
# dtrace on Linux runs gcc and uses flags from environment
SET(CFLAGS_SAVED $ENV{CFLAGS})
SET(ENV{CFLAGS} ${CMAKE_C_FLAGS})
SET(outfile "${CMAKE_BINARY_DIR}/probes_mysql.o")
# Systemtap object
EXECUTE_PROCESS(
COMMAND ${DTRACE} -G -s ${CMAKE_SOURCE_DIR}/include/probes_mysql.d.base
-o ${outfile}
)
SET(ENV{CFLAGS} ${CFLAGS_SAVED})
ENDIF()
# Do not try to extend the library if we have not built the .o file
IF(outfile)
# Add full object path to linker flags
GET_TARGET_PROPERTY(target_type ${target} TYPE)
IF(NOT target_type MATCHES "STATIC")
SET_TARGET_PROPERTIES(${target} PROPERTIES LINK_FLAGS "${outfile}")
ELSE()
# For static library flags, add the object to the library.
# Note: DTrace probes in static libraries are unusable currently
# (see explanation for DTRACE_INSTRUMENT_STATIC_LIBS below)
# but maybe one day this will be fixed.
ADD_CUSTOM_COMMAND(
TARGET ${target} POST_BUILD
COMMAND ${CMAKE_AR} r $<TARGET_FILE:${target}> ${outfile}
COMMAND ${CMAKE_RANLIB} $<TARGET_FILE:${target}>
)
# Used in DTRACE_INSTRUMENT_WITH_STATIC_LIBS
SET(TARGET_OBJECT_DIRECTORY_${target} ${objdir} CACHE INTERNAL "")
ENDIF()
ENDIF()
ENDIF()
ENDFUNCTION()
# Ugly workaround for Solaris' DTrace inability to use probes
# from static libraries, discussed e.g in this thread
# (http://opensolaris.org/jive/thread.jspa?messageID=432454)
# We have to collect all object files that may be instrumented
# and go into the mysqld (also those that come from in static libs)
# run them again through dtrace -G to generate an ELF file that links
# to mysqld.
MACRO (DTRACE_INSTRUMENT_STATIC_LIBS target libs)
IF(CMAKE_SYSTEM_NAME MATCHES "SunOS" AND ENABLE_DTRACE)
# Filter out non-static libraries in the list, if any
SET(static_libs)
FOREACH(lib ${libs})
GET_TARGET_PROPERTY(libtype ${lib} TYPE)
IF(libtype MATCHES STATIC_LIBRARY)
SET(static_libs ${static_libs} ${lib})
ENDIF()
ENDFOREACH()
FOREACH(lib ${static_libs})
SET(dirs ${dirs} ${TARGET_OBJECT_DIRECTORY_${lib}})
ENDFOREACH()
SET (obj ${CMAKE_CURRENT_BINARY_DIR}/${target}_dtrace_all.o)
ADD_CUSTOM_COMMAND(
OUTPUT ${obj}
DEPENDS ${static_libs}
COMMAND ${CMAKE_COMMAND}
-DDTRACE=${DTRACE}
-DOUTFILE=${obj}
-DDFILE=${CMAKE_BINARY_DIR}/include/probes_mysql.d
-DDTRACE_FLAGS=${DTRACE_FLAGS}
"-DDIRS=${dirs}"
-DTYPE=MERGE
-P ${CMAKE_SOURCE_DIR}/cmake/dtrace_prelink.cmake
VERBATIM
)
ADD_CUSTOM_TARGET(${target}_dtrace_all DEPENDS ${obj})
ADD_DEPENDENCIES(${target} ${target}_dtrace_all)
TARGET_LINK_LIBRARIES(${target} ${obj})
ENDIF()
ENDMACRO()
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