2006-10-23 David Smith <dsmith@redhat.com>

	* main.cxx (printscript): New function containing code moved from
	main().
	(main): Added code to create cache directory, call function to
	generate hash, and see if we can use cached source/module.  If
	pass 4 is actually run to produce a new module, we call
	add_to_cache() to cache the result.
	* session.h (struct systemtap_session): Added hash/cache session
	data.
	* cache.cxx: New file handling adding/getting files from the
	cache.
	* cache.h: New header file for cache.cxx.
	* hash.cxx: New file containing C++ wrapper for routines in
	mdfour.c and the find_hash function which computes the hash file
	name for an input script.
	* hash.h: New header file for hash.cxx.
	* mdfour.c: New file containing MD4 hash code.
	* mdfour.h: New header file for mdfour.c.
	* util.cxx: New file containing several utility functions used by
	the caching code.
	* util.h: New header file for util.cxx.
	* Makefile.am: Added new C/C++ files.
	* Makefile.in: Regenerated.

1 files changed, 34 insertions, 0 deletions

diff --git a/hash.h b/hash.h
new file mode 100644
index 00000000..e923fee4
--- /dev/null
+++ b/hash.h
@@ -0,0 +1,34 @@
+#include <string>
+
+extern "C" {
+#include <string.h>
+#include <mdfour.h>
+}
+
+class hash
+{
+private:
+  struct mdfour md4;
+
+public:
+  hash() { start(); }
+
+  void start();
+
+  void add(const unsigned char *buffer, size_t size);
+  void add(const int x) { add((const unsigned char *)&x, sizeof(x)); }
+  void add(const long x) { add((const unsigned char *)&x, sizeof(x)); }
+  void add(const long long x) { add((const unsigned char *)&x, sizeof(x)); }
+  void add(const unsigned int x) { add((const unsigned char *)&x, sizeof(x)); }
+  void add(const unsigned long x) { add((const unsigned char *)&x,
+					sizeof(x)); }
+  void add(const unsigned long long x) { add((const unsigned char *)&x,
+					     sizeof(x)); }
+  void add(const char *s) { add((const unsigned char *)s, strlen(s)); }
+  void add(const std::string& s) { add((const unsigned char *)s.c_str(),
+				       s.length()); }
+
+  void result(std::string& r);
+};
+
+void find_hash (systemtap_session& s, const std::string& script);