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https://github.com/RGBCube/serenity
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Misc: Add a simple init process
This doesn't do much right now, just fork off a bunch of stuff and set priorities.
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parent
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commit
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6 changed files with 95 additions and 52 deletions
23
Servers/SystemServer/Makefile
Normal file
23
Servers/SystemServer/Makefile
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include ../../Makefile.common
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SYSTEMSERVER_OBJS = \
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main.o
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APP = SystemServer
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OBJS = $(SYSTEMSERVER_OBJS)
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DEFINES += -DUSERLAND
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all: $(APP)
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$(APP): $(OBJS)
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$(LD) -o $(APP) $(LDFLAGS) $(OBJS) -lc -lcore
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.cpp.o:
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@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
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-include $(OBJS:%.o=%.d)
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clean:
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@echo "CLEAN"; rm -f $(APP) $(OBJS) *.d
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4
Servers/SystemServer/install.sh
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4
Servers/SystemServer/install.sh
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#!/bin/bash
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#mkdir -p ../../Root/usr/include/SystemServer/
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#cp *.h ../../Root/usr/include/SystemServer/
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63
Servers/SystemServer/main.cpp
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63
Servers/SystemServer/main.cpp
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <sched.h>
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#include <AK/Assertions.h>
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void start_process(const char *prog, int prio)
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{
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pid_t pid = 0;
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while (true) {
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dbgprintf("Forking for %s...\n", prog);
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int pid = fork();
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if (pid < 0) {
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dbgprintf("Fork %s failed! %s\n", prog, strerror(errno));
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continue;
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} else if (pid > 0) {
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// parent...
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dbgprintf("Process %s hopefully started with priority %d...\n", prog, prio);
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return;
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}
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break;
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}
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while (true) {
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if (pid == 0) {
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dbgprintf("Executing for %s... at prio %d\n", prog, prio);
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struct sched_param p;
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p.sched_priority = prio;
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int ret = sched_setparam(pid, &p);
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ASSERT(ret == 0);
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char* progv[256];
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progv[0] = (char*)prog;
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progv[1] = nullptr;
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ret = execv(prog, progv);
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if (ret < 0) {
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dbgprintf("Exec %s failed! %s", prog, strerror(errno));
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continue;
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}
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break;
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} else {
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break;
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}
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}
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}
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int main(int, char **)
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{
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int lowest_prio = sched_get_priority_min(SCHED_OTHER);
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int highest_prio = sched_get_priority_max(SCHED_OTHER);
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start_process("/bin/LookupServer", lowest_prio);
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start_process("/bin/WindowServer", highest_prio);
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start_process("/bin/Taskbar", highest_prio);
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start_process("/bin/Terminal", highest_prio-1);
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start_process("/bin/Launcher", highest_prio);
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while (1) {
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sleep(1);
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}
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}
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