Adding a simple test program that calls OpenInputStream on an nsIChannel,

to help evaluate performance.

netwerk/test/Makefile.in

@@ -37,6 +37,7 @@ CPPSRCS		= \
 		TestFileInput2.cpp \
 		TestRes.cpp \
 		TestCallbacks.cpp \
+        TestSyncHTTP.cpp \
 		$(NULL)
 
 SIMPLE_PROGRAMS	= $(CPPSRCS:.cpp=$(BIN_SUFFIX))

netwerk/test/TestSyncHTTP.cpp

@@ -0,0 +1,67 @@
+#include <nsCOMPtr.h>
+#include <nsString.h>
+#include <nsIURI.h>
+#include <nsIChannel.h>
+#include <nsIHTTPChannel.h>
+#include <nsIInputStream.h>
+#include <nsNetUtil.h>
+
+/*
+ * This is a very simple program that tests a "blocking" HTTP get.  The call to
+ * OpenInputStream does not block; instead it returns a blocking nsIInputStream,
+ * from which we read the HTTP response content.
+ */
+
+#define RETURN_IF_FAILED(rv, what) \
+    PR_BEGIN_MACRO \
+    if (NS_FAILED(rv)) { \
+        printf(what ": failed - %08x\n", rv); \
+        return -1; \
+    } \
+    PR_END_MACRO
+
+int
+main(int argc, char **argv)
+{
+    nsresult rv;
+    nsCOMPtr<nsIURI> uri;
+    nsCOMPtr<nsIChannel> channel;
+    nsCOMPtr<nsIInputStream> inputStream;
+    PRTime t1, t2;
+
+    if (argc < 2) {
+        printf("Usage: TestSyncHTTP <url>\n");
+        return -1;
+    }
+
+    rv = NS_NewURI(getter_AddRefs(uri), argv[1]);
+    RETURN_IF_FAILED(rv, "NS_NewURI");
+
+    rv = NS_OpenURI(getter_AddRefs(channel), uri, nsnull, nsnull);
+    RETURN_IF_FAILED(rv, "NS_OpenURI");
+
+    nsCOMPtr<nsIHTTPChannel> httpChannel = do_QueryInterface(channel);
+    if (httpChannel)
+        httpChannel->SetOpenInputStreamHasEventQueue(PR_FALSE);
+
+    t1 = PR_Now();
+
+    rv = channel->OpenInputStream(getter_AddRefs(inputStream));
+    RETURN_IF_FAILED(rv, "nsIChannel::OpenInputStream");
+
+    //
+    // read the response content...
+    //
+    char buf[256];
+    PRUint32 bytesRead = 1, totalRead = 0;
+    while (bytesRead > 0) {
+        rv = inputStream->Read(buf, sizeof buf, &bytesRead);
+        RETURN_IF_FAILED(rv, "nsIInputStream::Read");
+        totalRead += bytesRead;
+    }
+    t2 = PR_Now();
+
+    printf("total read: %u bytes\n", totalRead);
+    printf("total read time: %0.3f\n", ((double) (t2 - t1))/1000000.0);
+    return 0;
+}