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Put more thought into i/o polyfills

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wait4() is now solid enough to run `make -j100` on Windows. You can now
use MSG_DONTWAIT on Windows. There was a handle leak in accept() that's
been fixed. Our WIN32 overlapped i/o code has been simplified. Priority
class now inherits into subprocesses, so the verynice command will work
and the signal mask will now be inherited by execve() and posix_spawn()
This commit is contained in:
Justine Tunney 2023-11-06 16:38:44 -08:00
parent 736fdb757a
commit e961385e55
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GPG key ID: BE714B4575D6E328
52 changed files with 679 additions and 487 deletions
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17
libc/proc/proc.internal.h
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@ -2,25 +2,27 @@
#define COSMOPOLITAN_LIBC_PROC_H_
#include "libc/atomic.h"
#include "libc/calls/struct/rusage.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/dll.h"
#include "libc/thread/thread.h"
#include "libc/thread/tls.h"
#include "third_party/nsync/cv.h"
#include "third_party/nsync/mu.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define PROC_ALIVE 0
#define PROC_ZOMBIE 1
#define PROC_UNDEAD 2
#define PROC_CONTAINER(e) DLL_CONTAINER(struct Proc, elem, e)
struct Proc {
int pid;
int status;
int waiters;
bool iszombie;
bool wasforked;
uint32_t wstatus;
int64_t handle;
struct Dll elem;
nsync_cv onexit;
struct rusage ru;
};
@ -28,15 +30,15 @@ struct Procs {
int waiters;
atomic_uint once;
nsync_mu lock;
nsync_cv onexit;
intptr_t thread;
intptr_t onstart;
intptr_t onbirth;
intptr_t haszombies;
struct Dll *list;
struct Dll *free;
struct Dll *undead;
struct Dll *zombies;
struct Proc pool[8];
unsigned allocated;
struct CosmoTib tls;
struct rusage ruchlds;
};
@ -50,6 +52,7 @@ int64_t __proc_search(int);
struct Proc *__proc_new(void);
void __proc_add(struct Proc *);
void __proc_free(struct Proc *);
int __proc_harvest(struct Proc *, bool);
int sys_wait4_nt(int, int *, int, struct rusage *);
COSMOPOLITAN_C_END_