Builtins for sandbox profile serde

Differential Revision: D64869470

fbshipit-source-id: dfb8571380c508766a2e7eca8a263c9dee288dd7

hphp/hack/hhi/ext_sb_profile.hhi

@@ -0,0 +1,6 @@
+<?hh
+
+<<__PHPStdLib>>
+function sb_profile_ser(string $sb_root, string $prof_path): string;
+<<__PHPStdLib>>
+function sb_profile_deser(string $sb_root, string $prof_path): string;

hphp/runtime/ext/sb_profile/ext_sb_profile.cpp

@@ -0,0 +1,28 @@
+#include "hphp/runtime/ext/extension.h"
+#include "hphp/runtime/vm/jit/prof-data-serialize.h"
+
+namespace HPHP {
+
+String HHVM_FUNCTION(sb_profile_ser,
+                     const String& sb_root,
+                     const String& prof_path) {
+  auto const status = jit::serializeSBProfData(sb_root.data(), prof_path.data());
+  return String{status.c_str()};
+}
+
+String HHVM_FUNCTION(sb_profile_deser,
+                     const String& sb_root,
+                     const String& prof_path) {
+  auto const status = jit::deserializeSBProfData(sb_root.data(), prof_path.data());
+  return String{status.c_str()};
+}
+
+static struct SbProfileExtension final : Extension {
+  SbProfileExtension()
+    : Extension("sb_profile", NO_EXTENSION_VERSION_YET, "hphp_hphpi") {}
+  void moduleRegisterNative() override {
+    HHVM_FE(sb_profile_ser);
+    HHVM_FE(sb_profile_deser);
+  }
+} s_sb_profile_extension;
+}

hphp/runtime/ext/sb_profile/ext_sb_profile.php

@@ -0,0 +1,22 @@
+<?hh
+
+/**
+ * Serializes sandbox profile. A profile can be serialized only once for the
+ * lifetime of the HHVM process.
+ *
+ * @param string $sb_root - PHP root directory of the sandbox.
+ * @param string $prof_path - Full path of the profile file.
+ * @return string - Status of the serialization attempt.
+ */
+<<__Native>>
+function sb_profile_ser(string $sb_root, string $prof_path): string;
+/**
+ * Deerializes sandbox profile. A profile can be deserialized only once for the
+ * lifetime of the HHVM process.
+ *
+ * @param string $sb_root - PHP root directory of the sandbox.
+ * @param string $prof_path - Full path of the profile file.
+ * @return string - Status of the deserialization attempt.
+ */
+<<__Native>>
+function sb_profile_deser(string $sb_root, string $prof_path): string;