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Get fork() working on Windows

Browse source 
This is done without using Microsoft's internal APIs. MAP_PRIVATE
mappings are copied to the subprocess via a pipe, since Microsoft
doesn't want us to have proper COW pages. MAP_SHARED mappings are
remapped without needing to do any copying. Global variables need
copying along with the stack and the whole heap of anonymous mem.
This actually improves the reliability of the redbean http server
although one shouldn't expect 10k+ connections on a home computer
that isn't running software built to serve like Linux or FreeBSD.
This commit is contained in:
Justine Tunney 2020-11-13 01:27:49 -08:00
parent aea89fe832
commit db33973e0a
105 changed files with 1476 additions and 912 deletions
Download patch file Download diff file Expand all files Collapse all files

16
libc/nt/struct/drawtextparams.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_DRAWTEXTPARAMS_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_DRAWTEXTPARAMS_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct NtDrawTextParams {
uint32_t cbSize;
int32_t iTabLength;
int32_t iLeftMargin;
int32_t iRightMargin;
uint32_t uiLengthDrawn;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_DRAWTEXTPARAMS_H_ */

4
libc/nt/struct/msg.h
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@ -6,8 +6,8 @@
struct NtMsg {
int64_t hwnd;
uint32_t message;
uintptr_t wParam;
intptr_t lParam;
uint64_t wParam;
int64_t lParam;
uint32_t time;
struct NtPoint pt;
};

18
libc/nt/struct/paintstruct.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_PAINTSTRUCT_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_PAINTSTRUCT_H_
#include "libc/nt/struct/rect.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct NtPaintStruct {
int64_t hdc;
bool32 fErase;
struct NtRect rcPaint;
bool32 fRestore;
bool32 fIncUpdate;
uint8_t rgbReserved[32];
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_PAINTSTRUCT_H_ */

15
libc/nt/struct/rect.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_RECT_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_RECT_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct NtRect {
int32_t left;
int32_t top;
int32_t right;
int32_t bottom;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_RECT_H_ */

13
libc/nt/struct/size.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_SIZE_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_SIZE_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct NtSize {
int32_t cx;
int32_t cy;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_SIZE_H_ */

22
libc/nt/struct/wndclass.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_WNDCLASS_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_WNDCLASS_H_
#include "libc/nt/typedef/wndproc.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct NtWndClass {
uint32_t style;
NtWndProc lpfnWndProc;
int32_t cbClsExtra;
int32_t cbWndExtra;
int64_t hInstance;
int64_t hIcon;
int64_t hCursor;
int64_t hbrBackground;
const char16_t *lpszMenuName;
const char16_t *lpszClassName;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_WNDCLASS_H_ */

24
libc/nt/struct/wndclassex.h Normal file
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#ifndef COSMOPOLITAN_LIBC_NT_STRUCT_WNDCLASSEX_H_
#define COSMOPOLITAN_LIBC_NT_STRUCT_WNDCLASSEX_H_
#include "libc/nt/typedef/wndproc.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct NtWndClassEx {
uint32_t cbSize;
uint32_t style;
NtWndProc lpfnWndProc;
int32_t cbClsExtra;
int32_t cbWndExtra;
int64_t hInstance;
int64_t hIcon;
int64_t hCursor;
int64_t hbrBackground;
const char16_t *lpszMenuName;
const char16_t *lpszClassName;
int64_t hIconSm;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NT_STRUCT_WNDCLASSEX_H_ */