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This reverts commit 0adff0af20c7d9bae8bd8bdf402506c10369ead1.
Breaks the GPU build
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Add a `clock_gettime` emulation layer and use it to implement the `time`
entrypoint.
For windows, the monotonic clock is emulated using `QPC`.
The realtime clock is emulated using `GetSystemTimePreciseAsFileTime`.
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This is a part of #97655.
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declaration" (#98593)
Reverts llvm/llvm-project#98075
bots are broken
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This is a part of #97655.
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Reverts llvm/llvm-project#91657 and Relands #91485
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Reverts llvm/llvm-project#91485. It breaks GPU and fuchisa.
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This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
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Similar to D159208, this patch unifies the calls to a syscall, in this
patch it is the syscall SYS_clock_gettime/SYS_clock_gettime64.
This patch also fixes calls to SYS_clock_gettime64 by creating a
timespec64 object, passing it to the syscall and rewriting the timespec
given by the caller with timespec64 object's contents. This fixes cases
where timespec has a 4 bytes long time_t member, but SYS_clock_gettime
is not available (e.g., rv32).
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This patch is large, but is almost entirely just adding casts to calls
to syscall_impl. Much of the work was done programatically, with human
checking when the syntax or types got confusing.
Reviewed By: mcgrathr
Differential Revision: https://reviews.llvm.org/D156950
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This patch adds a bunch of ifdefs to handle the 32 bit versions of
some syscalls, which often only append a 64 to the name of the syscall
(with exception of SYS_lseek -> SYS_llseek and SYS_futex ->
SYS_futex_time64)
This patch also tries to handle cases where wait4 is not available
(as in riscv32): to implement wait, wait4 and waitpid when wait4 is
not available, we check for alternative wait calls and ultimately rely
on waitid to implement them all.
In riscv32, only waitid is available, so we need it to support this
platform.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D148371
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Switch use of errno in src/time and test/src/time to libc_errno.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D145192
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Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D136666
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