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fix EpollEvent memory layout (#411)

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* fix EpollEvent memory layout

on x86_64, `EpollEvent` is packed - the upstream version is correct here

* copy-paste upstream instead

* Adjust lines to be 80 characters per line.

---------

Co-authored-by: cheatfate <eugene.kabanov@status.im>
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Jacek Sieka 2023-07-06 18:51:59 +02:00 committed by GitHub
parent 0a6f5854a7
commit 3d80ea9fc7
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1 changed files with 13 additions and 4 deletions
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chronos/osdefs.nim
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@ -1001,13 +1001,22 @@ elif defined(linux):
EPOLL_CTL_DEL* = 2 EPOLL_CTL_DEL* = 2
EPOLL_CTL_MOD* = 3 EPOLL_CTL_MOD* = 3
# https://github.com/torvalds/linux/blob/ff6992735ade75aae3e35d16b17da1008d753d28/include/uapi/linux/eventpoll.h#L77
when defined(linux) and defined(amd64):
{.pragma: epollPacked, packed.}
else:
{.pragma: epollPacked.}
type type
EpollData* {.importc: "union epoll_data", EpollData* {.importc: "epoll_data_t",
header: "<sys/epoll.h>", pure, final.} = object header: "<sys/epoll.h>", pure, final, union.} = object
`ptr`* {.importc: "ptr".}: pointer
fd* {.importc: "fd".}: cint
u32* {.importc: "u32".}: uint32
u64* {.importc: "u64".}: uint64 u64* {.importc: "u64".}: uint64
EpollEvent* {.importc: "struct epoll_event", header: "<sys/epoll.h>", EpollEvent* {.importc: "struct epoll_event",
pure, final.} = object header: "<sys/epoll.h>", pure, final, epollPacked.} = object
events*: uint32 # Epoll events events*: uint32 # Epoll events
data*: EpollData # User data variable data*: EpollData # User data variable