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Snarf'd gtk's NS_GetCurrentThread() implementation.

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This commit is contained in:
cls%seawood.org 2000-08-01 06:02:28 +00:00
parent d9e1a8bf25
commit b7c77de2ab
1 changed files with 56 additions and 0 deletions
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56
widget/src/beos/nsToolkit.cpp
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@ -29,6 +29,12 @@
#include "nsSwitchToUIThread.h"
#include "plevent.h"
//
// Static thread local storage index of the Toolkit
// object associated with a given thread...
//
static PRUintn gToolkitTLSIndex = 0;
//NS_IMPL_ISUPPORTS(nsToolkit, NS_ITOOLKIT_IID)
//-------------------------------------------------------------------------
//
@ -152,6 +158,7 @@ nsToolkit::nsToolkit()
nsToolkit::~nsToolkit()
{
Kill();
PR_SetThreadPrivate(gToolkitTLSIndex, nsnull);
}
void nsToolkit::Kill()
@ -268,3 +275,52 @@ void nsToolkit::CallMethodAsync(MethodInfo *info)
id.sync = false;
write_port_etc(eventport, WM_CALLMETHOD, &id, sizeof(id), B_TIMEOUT, 0);
}
//-------------------------------------------------------------------------
//
// Return the nsIToolkit for the current thread. If a toolkit does not
// yet exist, then one will be created...
//
//-------------------------------------------------------------------------
NS_METHOD NS_GetCurrentToolkit(nsIToolkit* *aResult)
{
nsIToolkit* toolkit = nsnull;
nsresult rv = NS_OK;
PRStatus status;
// Create the TLS index the first time through...
if (0 == gToolkitTLSIndex) {
status = PR_NewThreadPrivateIndex(&gToolkitTLSIndex, NULL);
if (PR_FAILURE == status) {
rv = NS_ERROR_FAILURE;
}
}
if (NS_SUCCEEDED(rv)) {
toolkit = (nsIToolkit*)PR_GetThreadPrivate(gToolkitTLSIndex);
//
// Create a new toolkit for this thread...
//
if (!toolkit) {
toolkit = new nsToolkit();
if (!toolkit) {
rv = NS_ERROR_OUT_OF_MEMORY;
} else {
NS_ADDREF(toolkit);
toolkit->Init(PR_GetCurrentThread());
//
// The reference stored in the TLS is weak. It is removed in the
// nsToolkit destructor...
//
PR_SetThreadPrivate(gToolkitTLSIndex, (void*)toolkit);
}
} else {
NS_ADDREF(toolkit);
}
*aResult = toolkit;
}
return rv;
}