mirror of
https://gitlab.isc.org/isc-projects/bind9
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c6c0a9fdba
These functions can be used to pass a uv handle between threads in a safe manner. The other option is to use uv_pipe and pass the uv_handle via IPC, which is way more complex. uv_export() and uv_import() functions existed in libuv at some point but were removed later. This code is based on the original removed code. The Windows version of the code uses two functions internal to libuv; a patch for libuv is attached for exporting these functions.
28 lines
1.2 KiB
Diff
28 lines
1.2 KiB
Diff
To make TCP listening properly multithreaded, we need to have the
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uv_export() and uv_import() functions that were removed from libuv.
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The alternative is passing sockets over IPC, which is complicated and
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error prone.
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To make it simple, we export two internal functions from libuv; they will
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be used in lib/isc/netmgr/uv-compat.c by our versions of the uv_export()
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and uv_import() functions.
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diff --git a/src/win/internal.h b/src/win/internal.h
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index 058ddb8e..a9dc4168 100644
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--- a/src/win/internal.h
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+++ b/src/win/internal.h
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@@ -92,11 +92,11 @@ void uv_process_tcp_connect_req(uv_loop_t* loop, uv_tcp_t* handle,
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void uv_tcp_close(uv_loop_t* loop, uv_tcp_t* tcp);
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void uv_tcp_endgame(uv_loop_t* loop, uv_tcp_t* handle);
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-int uv__tcp_xfer_export(uv_tcp_t* handle,
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+UV_EXTERN int uv__tcp_xfer_export(uv_tcp_t* handle,
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int pid,
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uv__ipc_socket_xfer_type_t* xfer_type,
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uv__ipc_socket_xfer_info_t* xfer_info);
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-int uv__tcp_xfer_import(uv_tcp_t* tcp,
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+UV_EXTERN int uv__tcp_xfer_import(uv_tcp_t* tcp,
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uv__ipc_socket_xfer_type_t xfer_type,
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uv__ipc_socket_xfer_info_t* xfer_info);
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