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Kernel: Introduce threads, and refactor everything in support of it.

Browse source 
The scheduler now operates on threads, rather than on processes.
Each process has a main thread, and can have any number of additional
threads. The process exits when the main thread exits.

This patch doesn't actually spawn any additional threads, it merely
does all the plumbing needed to make it possible. :^)
This commit is contained in:
Andreas Kling 2019-03-23 22:03:17 +01:00
parent b0de6aa8d8
commit 60d25f0f4a
32 changed files with 1356 additions and 1098 deletions
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170
Kernel/Syscall.cpp
View file

@ -61,182 +61,182 @@ static dword handle(RegisterDump& regs, dword function, dword arg1, dword arg2,
Console::the().put_char(arg1 & 0xff);
break;
case Syscall::SC_sleep:
return current->sys$sleep((unsigned)arg1);
return current->process().sys$sleep((unsigned)arg1);
case Syscall::SC_usleep:
return current->sys$usleep((unsigned)arg1);
return current->process().sys$usleep((unsigned)arg1);
case Syscall::SC_gettimeofday:
return current->sys$gettimeofday((timeval*)arg1);
return current->process().sys$gettimeofday((timeval*)arg1);
case Syscall::SC_get_dir_entries:
return current->sys$get_dir_entries((int)arg1, (void*)arg2, (size_t)arg3);
return current->process().sys$get_dir_entries((int)arg1, (void*)arg2, (size_t)arg3);
case Syscall::SC_lstat:
return current->sys$lstat((const char*)arg1, (stat*)arg2);
return current->process().sys$lstat((const char*)arg1, (stat*)arg2);
case Syscall::SC_stat:
return current->sys$stat((const char*)arg1, (stat*)arg2);
return current->process().sys$stat((const char*)arg1, (stat*)arg2);
case Syscall::SC_getcwd:
return current->sys$getcwd((char*)arg1, (size_t)arg2);
return current->process().sys$getcwd((char*)arg1, (size_t)arg2);
case Syscall::SC_open:
return current->sys$open((const char*)arg1, (int)arg2, (mode_t)arg3);
return current->process().sys$open((const char*)arg1, (int)arg2, (mode_t)arg3);
case Syscall::SC_write:
return current->sys$write((int)arg1, (const byte*)arg2, (ssize_t)arg3);
return current->process().sys$write((int)arg1, (const byte*)arg2, (ssize_t)arg3);
case Syscall::SC_close:
return current->sys$close((int)arg1);
return current->process().sys$close((int)arg1);
case Syscall::SC_read:
return current->sys$read((int)arg1, (byte*)arg2, (ssize_t)arg3);
return current->process().sys$read((int)arg1, (byte*)arg2, (ssize_t)arg3);
case Syscall::SC_lseek:
return current->sys$lseek((int)arg1, (off_t)arg2, (int)arg3);
return current->process().sys$lseek((int)arg1, (off_t)arg2, (int)arg3);
case Syscall::SC_kill:
return current->sys$kill((pid_t)arg1, (int)arg2);
return current->process().sys$kill((pid_t)arg1, (int)arg2);
case Syscall::SC_getuid:
return current->sys$getuid();
return current->process().sys$getuid();
case Syscall::SC_getgid:
return current->sys$getgid();
return current->process().sys$getgid();
case Syscall::SC_getpid:
return current->sys$getpid();
return current->process().sys$getpid();
case Syscall::SC_getppid:
return current->sys$getppid();
return current->process().sys$getppid();
case Syscall::SC_waitpid:
return current->sys$waitpid((pid_t)arg1, (int*)arg2, (int)arg3);
return current->process().sys$waitpid((pid_t)arg1, (int*)arg2, (int)arg3);
case Syscall::SC_mmap:
return (dword)current->sys$mmap((const SC_mmap_params*)arg1);
return (dword)current->process().sys$mmap((const SC_mmap_params*)arg1);
case Syscall::SC_select:
return current->sys$select((const SC_select_params*)arg1);
return current->process().sys$select((const SC_select_params*)arg1);
case Syscall::SC_poll:
return current->sys$poll((pollfd*)arg1, (int)arg2, (int)arg3);
return current->process().sys$poll((pollfd*)arg1, (int)arg2, (int)arg3);
case Syscall::SC_munmap:
return current->sys$munmap((void*)arg1, (size_t)arg2);
return current->process().sys$munmap((void*)arg1, (size_t)arg2);
case Syscall::SC_gethostname:
return current->sys$gethostname((char*)arg1, (size_t)arg2);
return current->process().sys$gethostname((char*)arg1, (size_t)arg2);
case Syscall::SC_exit:
cli();
current->sys$exit((int)arg1);
current->process().sys$exit((int)arg1);
ASSERT_NOT_REACHED();
return 0;
case Syscall::SC_chdir:
return current->sys$chdir((const char*)arg1);
return current->process().sys$chdir((const char*)arg1);
case Syscall::SC_uname:
return current->sys$uname((utsname*)arg1);
return current->process().sys$uname((utsname*)arg1);
case Syscall::SC_set_mmap_name:
return current->sys$set_mmap_name((void*)arg1, (size_t)arg2, (const char*)arg3);
return current->process().sys$set_mmap_name((void*)arg1, (size_t)arg2, (const char*)arg3);
case Syscall::SC_readlink:
return current->sys$readlink((const char*)arg1, (char*)arg2, (size_t)arg3);
return current->process().sys$readlink((const char*)arg1, (char*)arg2, (size_t)arg3);
case Syscall::SC_ttyname_r:
return current->sys$ttyname_r((int)arg1, (char*)arg2, (size_t)arg3);
return current->process().sys$ttyname_r((int)arg1, (char*)arg2, (size_t)arg3);
case Syscall::SC_ptsname_r:
return current->sys$ptsname_r((int)arg1, (char*)arg2, (size_t)arg3);
return current->process().sys$ptsname_r((int)arg1, (char*)arg2, (size_t)arg3);
case Syscall::SC_setsid:
return current->sys$setsid();
return current->process().sys$setsid();
case Syscall::SC_getsid:
return current->sys$getsid((pid_t)arg1);
return current->process().sys$getsid((pid_t)arg1);
case Syscall::SC_setpgid:
return current->sys$setpgid((pid_t)arg1, (pid_t)arg2);
return current->process().sys$setpgid((pid_t)arg1, (pid_t)arg2);
case Syscall::SC_getpgid:
return current->sys$getpgid((pid_t)arg1);
return current->process().sys$getpgid((pid_t)arg1);
case Syscall::SC_getpgrp:
return current->sys$getpgrp();
return current->process().sys$getpgrp();
case Syscall::SC_fork:
return current->sys$fork(regs);
return current->process().sys$fork(regs);
case Syscall::SC_execve:
return current->sys$execve((const char*)arg1, (const char**)arg2, (const char**)arg3);
return current->process().sys$execve((const char*)arg1, (const char**)arg2, (const char**)arg3);
case Syscall::SC_geteuid:
return current->sys$geteuid();
return current->process().sys$geteuid();
case Syscall::SC_getegid:
return current->sys$getegid();
return current->process().sys$getegid();
case Syscall::SC_isatty:
return current->sys$isatty((int)arg1);
return current->process().sys$isatty((int)arg1);
case Syscall::SC_getdtablesize:
return current->sys$getdtablesize();
return current->process().sys$getdtablesize();
case Syscall::SC_dup:
return current->sys$dup((int)arg1);
return current->process().sys$dup((int)arg1);
case Syscall::SC_dup2:
return current->sys$dup2((int)arg1, (int)arg2);
return current->process().sys$dup2((int)arg1, (int)arg2);
case Syscall::SC_sigaction:
return current->sys$sigaction((int)arg1, (const sigaction*)arg2, (sigaction*)arg3);
return current->process().sys$sigaction((int)arg1, (const sigaction*)arg2, (sigaction*)arg3);
case Syscall::SC_umask:
return current->sys$umask((mode_t)arg1);
return current->process().sys$umask((mode_t)arg1);
case Syscall::SC_getgroups:
return current->sys$getgroups((ssize_t)arg1, (gid_t*)arg2);
return current->process().sys$getgroups((ssize_t)arg1, (gid_t*)arg2);
case Syscall::SC_setgroups:
return current->sys$setgroups((ssize_t)arg1, (const gid_t*)arg2);
return current->process().sys$setgroups((ssize_t)arg1, (const gid_t*)arg2);
case Syscall::SC_sigreturn:
current->sys$sigreturn();
current->process().sys$sigreturn();
ASSERT_NOT_REACHED();
return 0;
case Syscall::SC_sigprocmask:
return current->sys$sigprocmask((int)arg1, (const sigset_t*)arg2, (sigset_t*)arg3);
return current->process().sys$sigprocmask((int)arg1, (const sigset_t*)arg2, (sigset_t*)arg3);
case Syscall::SC_pipe:
return current->sys$pipe((int*)arg1);
return current->process().sys$pipe((int*)arg1);
case Syscall::SC_killpg:
return current->sys$killpg((int)arg1, (int)arg2);
return current->process().sys$killpg((int)arg1, (int)arg2);
case Syscall::SC_setuid:
return current->sys$setuid((uid_t)arg1);
return current->process().sys$setuid((uid_t)arg1);
case Syscall::SC_setgid:
return current->sys$setgid((gid_t)arg1);
return current->process().sys$setgid((gid_t)arg1);
case Syscall::SC_alarm:
return current->sys$alarm((unsigned)arg1);
return current->process().sys$alarm((unsigned)arg1);
case Syscall::SC_access:
return current->sys$access((const char*)arg1, (int)arg2);
return current->process().sys$access((const char*)arg1, (int)arg2);
case Syscall::SC_fcntl:
return current->sys$fcntl((int)arg1, (int)arg2, (dword)arg3);
return current->process().sys$fcntl((int)arg1, (int)arg2, (dword)arg3);
case Syscall::SC_ioctl:
return current->sys$ioctl((int)arg1, (unsigned)arg2, (unsigned)arg3);
return current->process().sys$ioctl((int)arg1, (unsigned)arg2, (unsigned)arg3);
case Syscall::SC_fstat:
return current->sys$fstat((int)arg1, (stat*)arg2);
return current->process().sys$fstat((int)arg1, (stat*)arg2);
case Syscall::SC_mkdir:
return current->sys$mkdir((const char*)arg1, (mode_t)arg2);
return current->process().sys$mkdir((const char*)arg1, (mode_t)arg2);
case Syscall::SC_times:
return current->sys$times((tms*)arg1);
return current->process().sys$times((tms*)arg1);
case Syscall::SC_utime:
return current->sys$utime((const char*)arg1, (const utimbuf*)arg2);
return current->process().sys$utime((const char*)arg1, (const utimbuf*)arg2);
case Syscall::SC_sync:
return sync();
case Syscall::SC_link:
return current->sys$link((const char*)arg1, (const char*)arg2);
return current->process().sys$link((const char*)arg1, (const char*)arg2);
case Syscall::SC_unlink:
return current->sys$unlink((const char*)arg1);
return current->process().sys$unlink((const char*)arg1);
case Syscall::SC_symlink:
return current->sys$symlink((const char*)arg1, (const char*)arg2);
return current->process().sys$symlink((const char*)arg1, (const char*)arg2);
case Syscall::SC_read_tsc:
return current->sys$read_tsc((dword*)arg1, (dword*)arg2);
return current->process().sys$read_tsc((dword*)arg1, (dword*)arg2);
case Syscall::SC_rmdir:
return current->sys$rmdir((const char*)arg1);
return current->process().sys$rmdir((const char*)arg1);
case Syscall::SC_chmod:
return current->sys$chmod((const char*)arg1, (mode_t)arg2);
return current->process().sys$chmod((const char*)arg1, (mode_t)arg2);
case Syscall::SC_fchmod:
return current->sys$fchmod((int)arg1, (mode_t)arg2);
return current->process().sys$fchmod((int)arg1, (mode_t)arg2);
case Syscall::SC_socket:
return current->sys$socket((int)arg1, (int)arg2, (int)arg3);
return current->process().sys$socket((int)arg1, (int)arg2, (int)arg3);
case Syscall::SC_bind:
return current->sys$bind((int)arg1, (const sockaddr*)arg2, (socklen_t)arg3);
return current->process().sys$bind((int)arg1, (const sockaddr*)arg2, (socklen_t)arg3);
case Syscall::SC_listen:
return current->sys$listen((int)arg1, (int)arg2);
return current->process().sys$listen((int)arg1, (int)arg2);
case Syscall::SC_accept:
return current->sys$accept((int)arg1, (sockaddr*)arg2, (socklen_t*)arg3);
return current->process().sys$accept((int)arg1, (sockaddr*)arg2, (socklen_t*)arg3);
case Syscall::SC_connect:
return current->sys$connect((int)arg1, (const sockaddr*)arg2, (socklen_t)arg3);
return current->process().sys$connect((int)arg1, (const sockaddr*)arg2, (socklen_t)arg3);
case Syscall::SC_create_shared_buffer:
return current->sys$create_shared_buffer((pid_t)arg1, (size_t)arg2, (void**)arg3);
return current->process().sys$create_shared_buffer((pid_t)arg1, (size_t)arg2, (void**)arg3);
case Syscall::SC_get_shared_buffer:
return (dword)current->sys$get_shared_buffer((int)arg1);
return (dword)current->process().sys$get_shared_buffer((int)arg1);
case Syscall::SC_release_shared_buffer:
return current->sys$release_shared_buffer((int)arg1);
return current->process().sys$release_shared_buffer((int)arg1);
case Syscall::SC_chown:
return current->sys$chown((const char*)arg1, (uid_t)arg2, (gid_t)arg3);
return current->process().sys$chown((const char*)arg1, (uid_t)arg2, (gid_t)arg3);
case Syscall::SC_restore_signal_mask:
return current->sys$restore_signal_mask((dword)arg1);
return current->process().sys$restore_signal_mask((dword)arg1);
case Syscall::SC_seal_shared_buffer:
return current->sys$seal_shared_buffer((int)arg1);
return current->process().sys$seal_shared_buffer((int)arg1);
case Syscall::SC_get_shared_buffer_size:
return current->sys$get_shared_buffer_size((int)arg1);
return current->process().sys$get_shared_buffer_size((int)arg1);
case Syscall::SC_sendto:
return current->sys$sendto((const SC_sendto_params*)arg1);
return current->process().sys$sendto((const SC_sendto_params*)arg1);
case Syscall::SC_recvfrom:
return current->sys$recvfrom((const SC_recvfrom_params*)arg1);
return current->process().sys$recvfrom((const SC_recvfrom_params*)arg1);
case Syscall::SC_getsockopt:
return current->sys$getsockopt((const SC_getsockopt_params*)arg1);
return current->process().sys$getsockopt((const SC_getsockopt_params*)arg1);
case Syscall::SC_setsockopt:
return current->sys$setsockopt((const SC_setsockopt_params*)arg1);
return current->process().sys$setsockopt((const SC_setsockopt_params*)arg1);
default:
kprintf("<%u> int0x82: Unknown function %u requested {%x, %x, %x}\n", current->pid(), function, arg1, arg2, arg3);
kprintf("<%u> int0x82: Unknown function %u requested {%x, %x, %x}\n", current->process().pid(), function, arg1, arg2, arg3);
break;
}
return 0;