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https://github.com/LadybirdBrowser/ladybird.git
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b32e961a84
The kernel now supports basic profiling of all the threads in a process
by calling profiling_enable(pid_t). You finish the profiling by calling
profiling_disable(pid_t).
This all works by recording thread stacks when the timer interrupt
fires and the current thread is in a process being profiled.
Note that symbolication is deferred until profiling_disable() to avoid
adding more noise than necessary to the profile.
A simple "/bin/profile" command is included here that can be used to
start/stop profiling like so:
$ profile 10 on
... wait ...
$ profile 10 off
After a profile has been recorded, it can be fetched in /proc/profile
There are various limits (or "bugs") on this mechanism at the moment:
- Only one process can be profiled at a time.
- We allocate 8MB for the samples, if you use more space, things will
not work, and probably break a bit.
- Things will probably fall apart if the profiled process dies during
profiling, or while extracing /proc/profile
136 lines
3.3 KiB
Makefile
136 lines
3.3 KiB
Makefile
include ../Makefile.common
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CXX_OBJS = \
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../AK/FileSystemPath.o \
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../AK/JsonParser.o \
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../AK/JsonValue.o \
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../AK/LogStream.o \
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../AK/String.o \
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../AK/StringBuilder.o \
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../AK/StringImpl.o \
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../AK/StringView.o \
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../Libraries/LibELF/ELFImage.o \
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../Libraries/LibELF/ELFLoader.o \
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Arch/i386/APIC.o \
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Arch/i386/CPU.o \
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Arch/i386/PIC.o \
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Arch/i386/PIT.o \
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CMOS.o \
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Console.o \
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Devices/BXVGADevice.o \
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Devices/BlockDevice.o \
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Devices/CharacterDevice.o \
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Devices/DebugLogDevice.o \
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Devices/Device.o \
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Devices/DiskDevice.o \
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Devices/DiskPartition.o \
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Devices/FloppyDiskDevice.o \
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Devices/FullDevice.o \
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Devices/GPTPartitionTable.o \
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Devices/KeyboardDevice.o \
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Devices/MBRPartitionTable.o \
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Devices/MBVGADevice.o \
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Devices/NullDevice.o \
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Devices/PATAChannel.o \
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Devices/PATADiskDevice.o \
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Devices/PCSpeaker.o \
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Devices/PS2MouseDevice.o \
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Devices/RandomDevice.o \
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Devices/SB16.o \
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Devices/SerialDevice.o \
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Devices/ZeroDevice.o \
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DoubleBuffer.o \
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FileSystem/Custody.o \
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FileSystem/DevPtsFS.o \
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FileSystem/DiskBackedFileSystem.o \
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FileSystem/Ext2FileSystem.o \
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FileSystem/FIFO.o \
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FileSystem/File.o \
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FileSystem/FileDescription.o \
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FileSystem/FileSystem.o \
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FileSystem/Inode.o \
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FileSystem/InodeFile.o \
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FileSystem/InodeWatcher.o \
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FileSystem/ProcFS.o \
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FileSystem/SharedMemory.o \
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FileSystem/TmpFS.o \
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FileSystem/VirtualFileSystem.o \
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Heap/SlabAllocator.o \
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Heap/kmalloc.o \
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IRQHandler.o \
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KBufferBuilder.o \
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KParams.o \
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KSyms.o \
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Lock.o \
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Net/E1000NetworkAdapter.o \
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Net/IPv4Socket.o \
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Net/LocalSocket.o \
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Net/LoopbackAdapter.o \
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Net/NetworkAdapter.o \
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Net/NetworkTask.o \
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Net/RTL8139NetworkAdapter.o \
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Net/Routing.o \
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Net/Socket.o \
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Net/TCPSocket.o \
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Net/UDPSocket.o \
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PCI.o \
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Process.o \
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ProcessTracer.o \
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Profiling.o \
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RTC.o \
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Scheduler.o \
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SharedBuffer.o \
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StdLib.o \
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Syscall.o \
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TTY/MasterPTY.o \
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TTY/PTYMultiplexer.o \
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TTY/SlavePTY.o \
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TTY/TTY.o \
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TTY/VirtualConsole.o \
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Thread.o \
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VM/AnonymousVMObject.o \
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VM/InodeVMObject.o \
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VM/MemoryManager.o \
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VM/PageDirectory.o \
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VM/PhysicalPage.o \
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VM/PhysicalRegion.o \
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VM/PurgeableVMObject.o \
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VM/RangeAllocator.o \
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VM/Region.o \
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VM/VMObject.o \
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WaitQueue.o \
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init.o \
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kprintf.o
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MODULE_OBJS = TestModule.o
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OBJS = $(CXX_OBJS) Arch/i386/Boot/boot.ao
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KERNEL = kernel
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CXXFLAGS += -ffreestanding -mno-80387 -mno-mmx -mno-sse -mno-sse2 -fno-asynchronous-unwind-tables
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CXXFLAGS += -nostdlib -nostdinc -nostdinc++
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CXXFLAGS += -I../Toolchain/Local/i686-pc-serenity/include/c++/8.3.0/
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CXXFLAGS += -I../Toolchain/Local/i686-pc-serenity/include/c++/8.3.0/i686-pc-serenity/
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DEFINES += -DKERNEL
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LDFLAGS += -Ttext 0x100000 -Wl,-T linker.ld -nostdlib
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all: $(KERNEL) $(MODULE_OBJS) kernel.map
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kernel.map: kernel
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@echo "MKMAP $@"; sh mkmap.sh
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$(KERNEL): $(OBJS)
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@echo "LD $@"; $(LD) $(LDFLAGS) -o $@ $(OBJS) -lgcc -lstdc++
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.cpp.o:
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@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
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%.ao: %.S
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@echo "AS $@"; $(AS) -o $@ $<
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-include $(CXX_OBJS:%.o=%.d)
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clean:
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@echo "CLEAN"; rm -f $(KERNEL) $(OBJS) *.d
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