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| author | Miguel Sofer <miguel.sofer@gmail.com> | 2009-12-11 05:32:59 (GMT) |
|---|---|---|
| committer | Miguel Sofer <miguel.sofer@gmail.com> | 2009-12-11 05:32:59 (GMT) |
| commit | 7e4c6f37909b4679e7ca70148d619d8059650581 (patch) | |
| tree | ee616cde688298665ccd635f404788ec487ce283 /generic/tclExecute.c | |
| parent | 11915ee6b5791aab49447d524ef382336aeec38d (diff) | |
| download | tcl-7e4c6f37909b4679e7ca70148d619d8059650581.zip tcl-7e4c6f37909b4679e7ca70148d619d8059650581.tar.gz tcl-7e4c6f37909b4679e7ca70148d619d8059650581.tar.bz2 | |
code comments
Diffstat (limited to 'generic/tclExecute.c')
| -rw-r--r-- | generic/tclExecute.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/generic/tclExecute.c b/generic/tclExecute.c index fdc2dc4..c88aa73 100644 --- a/generic/tclExecute.c +++ b/generic/tclExecute.c @@ -14,7 +14,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclExecute.c,v 1.463 2009/12/11 04:47:13 msofer Exp $ + * RCS: @(#) $Id: tclExecute.c,v 1.464 2009/12/11 05:33:00 msofer Exp $ */ #include "tclInt.h" @@ -1978,7 +1978,11 @@ TclExecuteByteCode( resumeCoroutine: /* * Reawakening a suspended coroutine: the [yield] command is - * returning. + * returning: + * - monkey-patch the cmdFrame chain + * - set the running level of the coroutine + * - monkey-patch the BP chain + * - restart the code at [yield]'s return */ corPtr = iPtr->execEnvPtr->corPtr; @@ -1987,15 +1991,14 @@ TclExecuteByteCode( NRE_ASSERT(corPtr->eePtr == iPtr->execEnvPtr); NRE_ASSERT(COR_IS_SUSPENDED(corPtr)); - *corPtr->callerBPPtr = OBP; - OBP = iPtr->execEnvPtr->bottomPtr; - - corPtr->stackLevel = &TAUX; - corPtr->base.cmdFramePtr->nextPtr = corPtr->caller.cmdFramePtr; - if (iPtr->execEnvPtr->rewind) { TRESULT = TCL_ERROR; } + + corPtr->base.cmdFramePtr->nextPtr = corPtr->caller.cmdFramePtr; + corPtr->stackLevel = &TAUX; + *corPtr->callerBPPtr = OBP; + OBP = iPtr->execEnvPtr->bottomPtr; goto returnToCaller; } @@ -2041,16 +2044,15 @@ TclExecuteByteCode( /* * First coroutine run, incomplete init: * - base.cmdFramePtr not set - * - need to break the BP chain + * - need to monkey-patch the BP chain + * - set the running level for the coroutine + * - insure that the coro runs in #0 */ corPtr->base.cmdFramePtr = bcFramePtr; - iPtr->varFramePtr = iPtr->rootFramePtr; corPtr->callerBPPtr = &BP->prevBottomPtr; - } - - if (!corPtr->stackLevel) { corPtr->stackLevel = &TAUX; + iPtr->varFramePtr = iPtr->rootFramePtr; } if (iPtr->execEnvPtr->rewind) { |