Removing instances of exec_ctx being passed around in functions in

src/core. exec_ctx is now a thread_local pointer of type ExecCtx instead of
grpc_exec_ctx which is initialized whenever ExecCtx is instantiated. ExecCtx
also keeps track of the previous exec_ctx so that nesting of exec_ctx is
allowed. This means that there is only one exec_ctx being used at any
time. Also, grpc_exec_ctx_finish is called in the destructor of the
object, and the previous exec_ctx is restored to avoid breaking current
functionality. The code still explicitly calls grpc_exec_ctx_finish
because removing all such instances causes the code to break.

1 files changed, 3 insertions, 4 deletions

diff --git a/src/core/lib/slice/b64.h b/src/core/lib/slice/b64.h
index 9b4dc65dbb..0a60f5a351 100644
--- a/src/core/lib/slice/b64.h
+++ b/src/core/lib/slice/b64.h
@@ -44,12 +44,11 @@ void grpc_base64_encode_core(char *result, const void *vdata, size_t data_size,
 
 /* Decodes data according to the base64 specification. Returns an empty
    slice in case of failure. */
-grpc_slice grpc_base64_decode(grpc_exec_ctx *exec_ctx, const char *b64,
-                              int url_safe);
+grpc_slice grpc_base64_decode(const char *b64, int url_safe);
 
 /* Same as above except that the length is provided by the caller. */
-grpc_slice grpc_base64_decode_with_len(grpc_exec_ctx *exec_ctx, const char *b64,
-                                       size_t b64_len, int url_safe);
+grpc_slice grpc_base64_decode_with_len(const char *b64, size_t b64_len,
+                                       int url_safe);
 
 #ifdef __cplusplus
 }