static THOOKENTRY TTAG
tek_lib_exec_run_dispatch(struct THook *hook, TAPTR task, TTAG msg)
{
struct LuaExecChild *ctx = hook->thk_Data;
struct TExecBase *TExecBase = ctx->exec;
switch (msg)
{
case TMSG_INITTASK:
{
TAPTR atom;
if (!ctx->taskname)
{
sprintf(ctx->atomname, "task.task: %p", task);
ctx->taskname = ctx->atomname + TEK_LIB_TASK_ATOMNAME_OFFSET;
}
atom = TLockAtom(ctx->atomname,
TATOMF_CREATE | TATOMF_NAME | TATOMF_TRY);
if (!atom)
return TFALSE;
TSetAtomData(atom, (TTAG) task);
TUnlockAtom(atom, TATOMF_KEEP);
return TTRUE;
}
case TMSG_RUNTASK:
{
struct LuaExecTask *parent = ctx->parent;
TUINT sig = TTASK_SIG_CHLD;
ctx->task = TFindTask(TNULL);
lua_pushcfunction(ctx->L, &tek_lib_exec_runchild);
lua_pushlightuserdata(ctx->L, ctx);
ctx->status = lua_pcall(ctx->L, 1, 1, 0);
TDBPRINTF(TDB_TRACE,("pcall2 ctx->status=%d\n", ctx->status));
report(ctx->L, ctx->status);
lua_close(ctx->L);
if (ctx->status)
sig |= TTASK_SIG_ABORT;
TSignal(parent->task, sig);
if (ctx->taskname)
{
TAPTR atom = TLockAtom(ctx->atomname, TATOMF_NAME);
TUnlockAtom(atom, TATOMF_DESTROY);
}
break;
}
}
return 0;
}
TLIBAPI struct TModule *TNewInstance(struct TModule *mod, TSIZE possize,
TSIZE negsize)
{
struct TExecBase *TExecBase = TGetExecBase(mod);
TAPTR inst = TAlloc(TNULL, possize + negsize);
if (inst)
{
TSIZE size = TMIN(((struct TModule *) mod)->tmd_NegSize, negsize);
inst = (TINT8 *) inst + negsize;
if (size > 0)
TCopyMem((TINT8 *) mod - size, (TINT8 *) inst - size, size);
size = TMIN(((struct TModule *) mod)->tmd_PosSize, possize);
TCopyMem(mod, inst, size);
((struct TModule *) inst)->tmd_PosSize = possize;
((struct TModule *) inst)->tmd_NegSize = negsize;
((struct TModule *) inst)->tmd_InitTask = TFindTask(TNULL);
}
return inst;
}
LOCAL TBOOL tek_lib_visual_io_open(TEKVisual *vis)
{
struct TExecBase *TExecBase = vis->vis_ExecBase;
struct IOData *iodata = TAlloc(TNULL, sizeof(struct IOData));
if (iodata)
{
TTAGITEM tags[2];
sprintf(iodata->atomname, "msgport.ui.%p", TFindTask(TNULL));
iodata->vis = vis;
vis->vis_IOData = iodata;
tags[0].tti_Tag = TTask_UserData;
tags[0].tti_Value = (TTAG) iodata;
tags[1].tti_Tag = TTAG_DONE;
struct THook taskhook;
TInitHook(&taskhook, tek_lib_visual_io_dispatch, TNULL);
vis->vis_IOTask = TCreateTask(&taskhook, tags);
if (vis->vis_IOTask)
return TTRUE;
TFree(iodata);
vis->vis_IOData = TNULL;
}
return TFALSE;
}
static int tek_lib_exec_child_sigjoin(lua_State *L, TUINT sig, TBOOL sigparent,
TBOOL do_results)
{
struct LuaExecChild *ctx = luaL_checkudata(L, 1, TEK_LIB_TASK_CLASSNAME);
struct TExecBase *TExecBase = ctx->exec;
struct TTask *self = TFindTask(TNULL), *task = ctx->task;
union TTaskRequest *req = &self->tsk_Request;
TBOOL abort = TFALSE;
int nres = 0;
if (!task)
return 0;
TDBPRINTF(TDB_TRACE,("child_join sig=%d sigparent=%d\n", sig, sigparent));
/* signal task */
TSignal(task, sig);
/* prepare destroy request */
self->tsk_ReqCode = TTREQ_DESTROYTASK;
req->trq_Task.trt_Task = task;
/* send to exec */
TPutMsg(TExecBase->texb_ExecPort, &self->tsk_SyncPort, self);
for (;;)
{
/* wait for return of request or receiving abort ourselves: */
TUINT sig = TWait(TTASK_SIG_SINGLE | TTASK_SIG_ABORT);
if (sig & TTASK_SIG_SINGLE)
break;
if (sig & TTASK_SIG_ABORT)
{
/* forward to child task */
TSignal(task, TTASK_SIG_ABORT);
if (sigparent)
{
/* also forward to own parent task */
struct LuaExecTask *parent = getparent(TExecBase);
if (parent)
TSignal(parent->task, TTASK_SIG_ABORT);
abort = TTRUE;
}
}
}
/* take delivery of replied destroy request */
TGetMsg(&self->tsk_SyncPort);
/* free task */
TFreeTask(task);
ctx->task = TNULL;
tek_lib_exec_freectxargs(ctx);
if (!abort && do_results)
{
int i;
nres = ctx->numres + 1;
lua_pushboolean(L, ctx->luastatus == 0);
for (i = 0; i < ctx->numres; ++i)
lua_pushlstring(L, ctx->results[i].arg, ctx->results[i].len);
}
tek_lib_exec_freeargs(TExecBase, ctx->results, ctx->numres);
luaL_unref(L, lua_upvalueindex(1), ctx->ref);
if (abort)
luaL_error(L, "received abort signal");
return nres;
}