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authorsamuel <samuel@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-11-20 09:59:10 +0000
committersamuel <samuel@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2018-11-20 09:59:10 +0000
commit07a324a0f6464f31765ee4bc5cfc23a99d426705 (patch)
treedd928b5cc16b6b44c9d7a1c68346da8061b0573a /coroutine/win64
parent27665e5134582bf58fb196268d659cc19df39f61 (diff)
Native implementation of coroutines to improve performance of fibers
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65834 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'coroutine/win64')
-rw-r--r--coroutine/win64/Context.asm44
-rw-r--r--coroutine/win64/Context.h64
2 files changed, 108 insertions, 0 deletions
diff --git a/coroutine/win64/Context.asm b/coroutine/win64/Context.asm
new file mode 100644
index 0000000000..f57d3fd387
--- /dev/null
+++ b/coroutine/win64/Context.asm
@@ -0,0 +1,44 @@
+;;
+;; win64.asm
+;; File file is part of the "Coroutine" project and released under the MIT License.
+;;
+;; Created by Samuel Williams on 10/5/2018.
+;; Copyright, 2018, by Samuel Williams. All rights reserved.
+;;
+
+.code
+
+coroutine_transfer proc
+ push rbp
+ push rbx
+ push rdi
+ push rsi
+ push r12
+ push r13
+ push r14
+ push r15
+
+ ; Save caller stack pointer
+ mov [rcx], rsp
+
+ ; Restore callee stack pointer
+ mov rsp, [rdx]
+
+ ; Restore callee stack
+ pop r15
+ pop r14
+ pop r13
+ pop r12
+ pop rsi
+ pop rdi
+ pop rbx
+ pop rbp
+
+ ; Put the first argument into the return value
+ mov rax, rcx
+
+ ; We pop the return address and jump to it
+ ret
+coroutine_transfer endp
+
+end
diff --git a/coroutine/win64/Context.h b/coroutine/win64/Context.h
new file mode 100644
index 0000000000..53d9d43ae6
--- /dev/null
+++ b/coroutine/win64/Context.h
@@ -0,0 +1,64 @@
+//
+// win64.h
+// File file is part of the "Coroutine" project and released under the MIT License.
+//
+// Created by Samuel Williams on 10/5/2018.
+// Copyright, 2018, by Samuel Williams. All rights reserved.
+//
+
+#pragma once
+
+#include <assert.h>
+#include <string.h>
+
+#if __cplusplus
+extern "C" {
+#endif
+
+#define COROUTINE void
+
+const size_t COROUTINE_REGISTERS = 8;
+
+// The fiber context (stack pointer).
+struct coroutine_context
+{
+ void **stack_pointer;
+};
+
+// The initialization function.
+typedef void(* coroutine_start)(coroutine_context *from, coroutine_context *self);
+
+inline void coroutine_initialize(
+ coroutine_context *context,
+ coroutine_start start,
+ void *stack_pointer,
+ size_t stack_size
+) {
+ context->stack_pointer = (void**)stack_pointer;
+
+ if (!start) {
+ assert(!context->stack_pointer);
+ /* We are main coroutine for this thread */
+ return;
+ }
+
+ /* Windows Thread Information Block */
+ *--context->stack_pointer = 0;
+ *--context->stack_pointer = stack_pointer;
+ *--context->stack_pointer = (void*)stack_size;
+
+ *--context->stack_pointer = (void*)start;
+
+ context->stack_pointer -= COROUTINE_REGISTERS;
+ memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
+}
+
+coroutine_context * coroutine_transfer(coroutine_context * current, coroutine_context * target);
+
+inline void coroutine_destroy(coroutine_context * context)
+{
+}
+
+#if __cplusplus
+}
+#endif \ No newline at end of file