OK, I've done it with my own patch, indeed, I just want to calling C APIs
with
XPCOM pointers. So I implemented the following function to deal with my
situation:
512020db461367413e46bfeb3af8b70ed45e01f8
xpcom/components/nsComponentManager.cpp | 14 ++++++++++++++
xpcom/components/nsIComponentManager.idl | 11 +++++++++++
2 files changed, 25 insertions(+)
diff --git a/xpcom/components/nsComponentManager.cpp
b/xpcom/components/nsComponentManager.cpp
index c5bcd92..bef39e2 100644
--- a/xpcom/components/nsComponentManager.cpp
+++ b/xpcom/components/nsComponentManager.cpp
@@ -21,6 +21,7 @@
#include "nsISupports.h"
#include "nspr.h"
#include "nsCRT.h" // for atoll
+#include "nsPrintfCString.h"
// Arena used by component manager for storing contractid string, dll
// location strings and small objects
@@ -1868,6 +1869,19 @@
nsComponentManagerImpl::SizeOfIncludingThis(mozilla::MallocSizeOf
aMallocSizeOf)
return n;
}
+NS_IMETHODIMP nsComponentManagerImpl::GetPointerForInterface(nsISupports
*aInstance, const nsIID & aIID, nsACString & _retval)
+{
+ nsQueryInterface queryInterface(aInstance);
+ void* result = nullptr;
+ nsresult rc = queryInterface(aIID, &result);
+ if (rc != NS_OK) {
+ _retval = "";
+ return NS_OK;
+ }
+ _retval = nsPrintfCString("0x%p", result);
+ return NS_OK;
+}
+
////////////////////////////////////////////////////////////////////////////////
// nsFactoryEntry
////////////////////////////////////////////////////////////////////////////////
diff --git a/xpcom/components/nsIComponentManager.idl
b/xpcom/components/nsIComponentManager.idl
index 1e5693a..912e11f 100644
--- a/xpcom/components/nsIComponentManager.idl
+++ b/xpcom/components/nsIComponentManager.idl
@@ -40,6 +40,17 @@ interface nsIComponentManager : nsISupports
in nsIIDRef aIID,
[iid_is(aIID),retval] out nsQIResult
result);
+ /**
+ * getPointerForInterface
+ *
+ * Returns string representation of the pointer for a instance of the
interface
+ *
+ * @param aInstance - The instance of the interface
+ * @param aIID - IID of interface requested
+ * @return ACString in hex format with "0x" prepended, or empty if the
instance have no aIID
+ */
+ ACString getPointerForInterface(in nsISupports aInstance,
+ in nsIIDRef aIID);
/**
* createInstance
On Wed, Dec 23, 2015 at 11:02 PM, Ted Mielczarek <[email protected]> wrote:
> No, js-ctypes does not have any support for calling methods on C++
> classes. In fact, that functionality was WONTFIXed a while back:
> https://bugzilla.mozilla.org/show_bug.cgi?id=505907.
>
> -Ted
> _______________________________________________
> dev-platform mailing list
> [email protected]
> https://lists.mozilla.org/listinfo/dev-platform
>
--
此致
礼
罗勇刚
Yours
sincerely,
Yonggang Luo
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