1 .\" Copyright (c) 2007 The DragonFly Project. All rights reserved.
3 .\" This code is derived from software contributed to The DragonFly Project
4 .\" by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>
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33 .\" $DragonFly: src/lib/libc/sys/lwp_create.2,v 1.1 2007/03/12 21:06:18 corecode Exp $
46 .Fn lwp_create "struct lwp_params *params"
50 function is used to spawn a new lwp in the current process.
51 In some way, this is like
55 does not return twice as parent and child.
56 Instead, the new lwp will start running a function which
57 is provided with the parameters
62 void (*func)(void *); /* Function to start execution */
63 void *arg; /* Parameter to this function */
64 void *stack; /* Stack address to use */
65 lwpid_t *tid1; /* Address to copy out new tid */
66 lwpid_t *tid2; /* Same */
77 to specify the function to be executed in the new lwp.
81 execution of the lwp correctly, either by calling
87 simply returns, behavior is unspecified.
88 The only function argument passed to
93 The new lwp starts out with its stack frame set to
97 is mandatory. If any of these is invalid, behavior is
104 point to variables where the tid of the new lwp should be stored.
105 There are two parameters so that storage for both parent
106 and child can be specified separately. Set any of these fields to
107 NULL in case you don't need the tid to be copied out.
109 Upon successful completion, the value 0 is returned;
110 otherwise the value -1 is returned and
121 function first appeared in