663f548f94
BACKGROUND The exit_group syscall, which is implicitly called by libc after the main function returns, kills all threads in a thread group, even if these threads are running, sleeping, or waiting on a futex. PROBLEM In normal use cases, exit_group does nothing since a well-written program should terminate all threads before the main function returns. But when this is not the case, exit_group can clean up the mess. Currently, Occlum does not implement exit_group. And the Occlum PAL process waits for all tasks (i.e., SGX threads) to finish before exiting. So without exit_group implemented, some tasks may be still running if after the main task exits. And this causes the Occlum PAL process to wait---forever. WORKAROUND To implement a real exit_group, we need signals to kill threads. But we do not have signals, yet. So we come up with a workaround: instead of waiting all tasks to finish in PAL, we just wait for the main task. As soon as the main task exits, the PAL process terminates, killing the remaining tasks.
90 lines
2.9 KiB
Makefile
90 lines
2.9 KiB
Makefile
CUR_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
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PROJECT_DIR := $(realpath $(CUR_DIR)/../)
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BUILD_DIR := $(PROJECT_DIR)/build
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# Dependencies: need to be compiled but not to run by any Makefile target
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TEST_DEPS := dev_null client
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# Tests: need to be compiled and run by test-% target
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TESTS := empty env hello_world malloc mmap file fs_perms getpid spawn sched pipe time \
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truncate readdir mkdir link tls pthread uname rlimit server \
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server_epoll unix_socket cout hostfs cpuid rdtsc device sleep exit_group
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# Benchmarks: need to be compiled and run by bench-% target
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BENCHES := spawn_and_exit_latency pipe_throughput unix_socket_throughput
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# Top-level Makefile targets
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BUILD_TARGETS := $(TEST_DEPS) $(TESTS) $(BENCHES)
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TEST_TARGETS := $(TESTS:%=test-%)
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BENCH_TARGETS := $(BENCHES:%=bench-%)
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.PHONY: all prebuild build postbuild test clean $(BUILD_TARGETS) $(TEST_TARGETS) $(BENCH_TARGETS)
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# Use echo program instead of built-in echo command in shell. This ensures
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# that echo can recognize escaped sequences (with -e argument) regardless of
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# the specific shell (e.g., bash, zash, etc.)
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ECHO := /bin/echo -e
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# Shell escaped sequences for colorful output
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CYAN := \033[1;36m
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GREEN := \033[1;32m
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RED := \033[1;31m
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NO_COLOR := \033[0m
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#############################################################################
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# Build targets
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#############################################################################
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all: build
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build: prebuild $(BUILD_TARGETS) postbuild
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prebuild:
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@$(RM) -rf $(BUILD_DIR)/test
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@mkdir -p $(BUILD_DIR)/test
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@cd $(BUILD_DIR)/test && \
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$(PROJECT_DIR)/build/bin/occlum init
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@cp Occlum.json Enclave.xml $(BUILD_DIR)/test/
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$(BUILD_TARGETS): %:
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@$(ECHO) "$(CYAN)BUILD TEST => $@$(NO_COLOR)"
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@$(MAKE) --no-print-directory -C $@
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@$(ECHO) "$(GREEN)DONE$(NO_COLOR)"
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postbuild:
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@cd $(BUILD_DIR)/test && \
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$(PROJECT_DIR)/build/bin/occlum build
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#############################################################################
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# Test targets
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#############################################################################
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test: build $(TEST_TARGETS)
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$(TEST_TARGETS): test-%: %
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@$(ECHO) "$(CYAN)RUN TEST => $<$(NO_COLOR)"
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@$(MAKE) --no-print-directory -C $< test ; \
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if [ $$? -eq 0 ] ; then \
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$(ECHO) "$(GREEN)PASS$(NO_COLOR)" ; \
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else \
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$(ECHO) "$(RED)FAILED$(NO_COLOR)" ; \
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fi ;
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#############################################################################
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# Benchmark targets
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#############################################################################
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bench: build $(BENCH_TARGETS)
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$(BENCH_TARGETS): bench-%: %
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@$(ECHO) "$(CYAN)RUN BENCH => $<$(NO_COLOR)"
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@$(MAKE) --no-print-directory -C $< test ; \
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if [ $$? -eq 0 ] ; then \
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$(ECHO) "$(GREEN)DONE$(NO_COLOR)" ; \
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else \
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$(ECHO) "$(RED)FAILED$(NO_COLOR)" ; \
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fi ;
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#############################################################################
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# Misc
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#############################################################################
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clean:
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@$(RM) -rf $(BUILD_DIR)/test
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