From 80b410a1b65f72042bae86be2ea9656196a0a0ff Mon Sep 17 00:00:00 2001 From: =?utf8?q?J=C3=A9r=C3=B4me=20Benoit?= Date: Sat, 3 Mar 2018 21:18:22 +0100 Subject: [PATCH] tree.c course code example. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Jérôme Benoit --- .gitignore | 2 ++ tree/Makefile | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++ tree/tree.c | 19 ++++++++++++ 3 files changed, 104 insertions(+) create mode 100644 tree/Makefile create mode 100644 tree/tree.c diff --git a/.gitignore b/.gitignore index 4d842c8..171ffa1 100644 --- a/.gitignore +++ b/.gitignore @@ -9,7 +9,9 @@ rw/writer/writer semaphore/semaphore signal/signaux0 threads/exemple1 +tree/tree upipe/upipe + TD3/exo[[:digit:]]/exo[[:digit:]] !TD3/exo[[:digit:]]/ diff --git a/tree/Makefile b/tree/Makefile new file mode 100644 index 0000000..f1e3425 --- /dev/null +++ b/tree/Makefile @@ -0,0 +1,83 @@ +# Sample Makefile to build simple project. +# +# This Makefile expect all source files (.c) to be at the same level, in the +# current working directory. +# +# It will automatically generate dependencies, compile all files, and produce a +# binary using the provided name. +# +# Set BINARY_NAME to the name of the binary file to build. +# Set BUILD_TYPE to either debug or release +# +# Automatic dependencies code from: +# http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr +BINARY_NAME=tree +BUILD_TYPE=debug +#BUILD_TYPE=release +LDLIBS=-lpthread + +# ==================================== +# DO NOT CHANGE STUFF BEYOND THIS LINE +# ==================================== + +all: $(BINARY_NAME) + +CC=gcc +LD=gcc + +WARN_FLAGS = -Wall -Wextra +STD_FLAG = -std=c11 + +ifeq ($(BUILD_TYPE),debug) +BUILDDIR := .build/debug +DEBUG_FLAG = -g +DEBUG = 1 +STRIP_FLAG = +OPTI_FLAG = -O0 +else +BUILDDIR := .build/release +DEBUG_FLAG = +DEBUG = 0 +STRIP_FLAG = -s +OPTI_FLAG = -O3 +endif + +CFLAGS := -DDEBUG=$(DEBUG) $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG) +LDFLAGS := $(LDFLAGS) $(STRIP_FLAG) + +OBJDIR := $(BUILDDIR)/objs +$(shell mkdir -p $(OBJDIR)) + +SRCS=$(wildcard *.c) +OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(SRCS)) + +DEPDIR := $(BUILDDIR)/deps +$(shell mkdir -p $(DEPDIR)) +DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td +POSTCOMPILE = mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d + +$(BINARY_NAME): $(OBJS) + @echo "[LD ] $@" + @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@ + +$(OBJDIR)/%.o: %.c $(DEPDIR)/%.d + @echo "[C ] $*" + @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@ + @$(POSTCOMPILE) + +$(DEPDIR)/%.d: ; + +.PRECIOUS: $(DEPDIR)/%.d + +include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS)))) + +clean: + @echo "[CLN]" + -@rm -r $(BUILDDIR) + -@rm $(BINARY_NAME) + +disassemble: $(BINARY_NAME) + objdump -d $< | less + +symbols: $(BINARY_NAME) + objdump -t $< | sort | less diff --git a/tree/tree.c b/tree/tree.c new file mode 100644 index 0000000..0a33a18 --- /dev/null +++ b/tree/tree.c @@ -0,0 +1,19 @@ +#include +#include +#include + +int main() { + pid_t p; + int i, n = 5; + + for (i = 0; i < n; i++) { + p = fork(); + if (p > 0) { + break; + } + printf("Processus %d de pere %d\n", getpid(), getppid()); + sleep(2); + } + sleep(1); + return 0; +} -- 2.34.1