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osproc: use clone with CLONE_VM on Linux for faster process spawning

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This commit is contained in:
Michał Zieliński 2014-02-14 15:08:02 +01:00
commit cd2bd7fa7b
2 changed files with 146 additions and 72 deletions
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25
lib/posix/linux.nim Normal file
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import posix
const
CSIGNAL* = 0x000000FF
CLONE_VM* = 0x00000100
CLONE_FS* = 0x00000200
CLONE_FILES* = 0x00000400
CLONE_SIGHAND* = 0x00000800
CLONE_PTRACE* = 0x00002000
CLONE_VFORK* = 0x00004000
CLONE_PARENT* = 0x00008000
CLONE_THREAD* = 0x00010000
CLONE_NEWNS* = 0x00020000
CLONE_SYSVSEM* = 0x00040000
CLONE_SETTLS* = 0x00080000
CLONE_PARENT_SETTID* = 0x00100000
CLONE_CHILD_CLEARTID* = 0x00200000
CLONE_DETACHED* = 0x00400000
CLONE_UNTRACED* = 0x00800000
CLONE_CHILD_SETTID* = 0x01000000
CLONE_STOPPED* = 0x02000000
# fn should be of type proc (a2: pointer): void {.cdecl.}
proc clone*(fn: pointer; child_stack: pointer; flags: cint;
arg: pointer; ptid: ptr TPid; tls: pointer; ctid: ptr TPid): cint {.importc, header: "<sched.h>".}