int task_init(FAR _TCB *tcb, const char *name, int priority, main_t entry, const char *argv[]) #endif { int ret; /* Associate file descriptors with the new task */ #if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 if (sched_setuptaskfiles(tcb) != OK) { return ERROR; } #endif /* Clone the parent's task environment */ (void)env_dup(tcb); /* Configure the user provided stack region */ #ifndef CONFIG_CUSTOM_STACK up_use_stack(tcb, stack, stack_size); #endif /* Initialize the task control block */ ret = task_schedsetup(tcb, priority, task_start, entry, TCB_FLAG_TTYPE_TASK); if (ret == OK) { /* Setup to pass parameters to the new task */ (void)task_argsetup(tcb, name, argv); } return ret; }
static int thread_create(const char *name, uint8_t type, int priority, main_t entry, const char **argv) #endif { FAR _TCB *tcb; pid_t pid; int ret; /* Allocate a TCB for the new task. */ tcb = (FAR _TCB*)kzalloc(sizeof(_TCB)); if (!tcb) { goto errout; } /* Associate file descriptors with the new task */ #if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 ret = sched_setuptaskfiles(tcb); if (ret != OK) { goto errout_with_tcb; } #endif /* Clone the parent's task environment */ (void)env_dup(tcb); /* Allocate the stack for the TCB */ #ifndef CONFIG_CUSTOM_STACK ret = up_create_stack(tcb, stack_size); if (ret != OK) { goto errout_with_tcb; } #endif /* Mark the type of this thread (this setting will be needed in * task_schedsetup() when up_initial_state() is called. */ tcb->flags |= type; /* Initialize the task control block */ ret = task_schedsetup(tcb, priority, task_start, entry); if (ret != OK) { goto errout_with_tcb; } /* Setup to pass parameters to the new task */ (void)task_argsetup(tcb, name, argv); /* Get the assigned pid before we start the task */ pid = (int)tcb->pid; /* Activate the task */ ret = task_activate(tcb); if (ret != OK) { /* The TCB was added to the active task list by task_schedsetup() */ dq_rem((FAR dq_entry_t*)tcb, (dq_queue_t*)&g_inactivetasks); goto errout_with_tcb; } return pid; errout_with_tcb: sched_releasetcb(tcb); errout: errno = ENOMEM; return ERROR; }