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2023-01-24runtime/cgo: use //go:build lines in C and assembly filesTobias Klauser
Replace deprecated // +build lines by their respective //go:build line counterpart. Also remove build constraints implied by file name or type. Change-Id: I8d18cd40071ca28d7654da8f0d22841f43729ca6 Reviewed-on: https://go-review.googlesource.com/c/go/+/460538 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2019-03-08cmd/cgo: add missing parameter list for function _cgo_wait_runtime_init_donePhilipp Stephani
Fixes #29879 Change-Id: Id2061a5eab67bb90a8116dc4f16073be1c9a09a9 GitHub-Last-Rev: 186863ab6aa9481744f276a7afbd87bd53c9f863 GitHub-Pull-Request: golang/go#29900 Reviewed-on: https://go-review.googlesource.com/c/go/+/159178 Reviewed-by: Philipp Stephani <phst@google.com> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-03-06runtime/cgo: add port for aix/ppc64Clément Chigot
This commit add port of runtime/cgo for aix/ppc64. AIX assembly is different from Linux assembly, therefore gcc_ppc64.S must be redone for AIX. Change-Id: I780ebab4ef9c4ce912f4c4d521d8c135b1eebf6e Reviewed-on: https://go-review.googlesource.com/c/go/+/164002 Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-10-10runtime/cgo: annotate unused variable with __attribute__((unused))Muhammad Falak R Wani
Fixes #28095 Change-Id: Id8668d52986c9805213e8847f49fe42dfde2e01a Reviewed-on: https://go-review.googlesource.com/c/140797 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-11runtime: make it possible to exit Go-created threadsAustin Clements
Currently, threads created by the runtime exist until the whole program exits. For #14592 and #20395, we want to be able to exit and clean up threads created by the runtime. This commit implements that mechanism. The main difficulty is how to clean up the g0 stack. In cgo mode and on Solaris and Windows where the OS manages thread stacks, we simply arrange to return from mstart and let the system clean up the thread. If the runtime allocated the g0 stack, then we use a new exitThread syscall wrapper that arranges to clear a flag in the M once the stack can safely be reaped and call the thread termination syscall. exitThread is based on the existing exit1 wrapper, which was always meant to terminate the calling thread. However, exit1 has never been used since it was introduced 9 years ago, so it was broken on several platforms. exitThread also has the additional complication of having to flag that the stack is unused, which requires some tricks on platforms that use the stack for syscalls. This still leaves the problem of how to reap the unused g0 stacks. For this, we move the M from allm to a new freem list as part of the M exiting. Later, allocm scans the freem list, finds Ms that are marked as done with their stack, removes these from the list and frees their g0 stacks. This also allows these Ms to be garbage collected. This CL does not yet use any of this functionality. Follow-up CLs will. Likewise, there are no new tests in this CL because we'll need follow-up functionality to test it. Change-Id: Ic851ee74227b6d39c6fc1219fc71b45d3004bc63 Reviewed-on: https://go-review.googlesource.com/46037 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2017-04-11cmd/link,runtime/cgo: enable PT_TLS generation on OpenBSDJoel Sing
OpenBSD 6.0 and later have support for PT_TLS in ld.so(1). Now that OpenBSD 6.1 has been released, OpenBSD 5.9 is no longer officially supported and Go can start generating PT_TLS for OpenBSD cgo binaries. This also allows us to remove the workarounds in the OpenBSD cgo runtime. This change also removes the environ and progname exports - these are now provided directly by ld.so(1) itself. Fixes #19932 Change-Id: I42e75ef9feb5dcd4696add5233497e3cbc48ad52 Reviewed-on: https://go-review.googlesource.com/40331 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-12-05runtime/cgo: retry pthread_create on EAGAINIan Lance Taylor
Update #18146. Change-Id: Ib447aabae9f203a8b61fb8c984b57d8e2bfe69c2 Reviewed-on: https://go-review.googlesource.com/33894 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-06-02runtime/cgo: avoid races on cgo_context_functionIan Lance Taylor
Change-Id: Ie9e6fda675e560234e90b9022526fd689d770818 Reviewed-on: https://go-review.googlesource.com/23610 Reviewed-by: Dmitry Vyukov <dvyukov@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-29cmd/cgo, runtime, runtime/cgo: use cgo context functionIan Lance Taylor
Add support for the context function set by runtime.SetCgoTraceback. The context function was added in CL 17761, without support. This CL is the support. This CL has not been tested for real C code, as a working context function for C code requires unwind support that does not seem to exist. I wanted to get the CL out before the freeze. I apologize for the length of this CL. It's mostly plumbing, but unfortunately the plumbing is processor-specific. Change-Id: I8ce11a0de9b3dafcc29efd2649d776e93bff0e90 Reviewed-on: https://go-review.googlesource.com/22508 Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-22runtime/cgo: use normal libinit on PPC GNU/LinuxIan Lance Taylor
The special case was because PPC did not support external linking, but now it does. Fixes #10410. Change-Id: I9b024686e0f03da7a44c1c59b41c529802f16ab0 Reviewed-on: https://go-review.googlesource.com/22372 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-01all: make copyright headers consistent with one space after periodBrad Fitzpatrick
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-01-27runtime/cgo: add cgo build tag to C filesRuss Cox
This makes "CGO_ENABLED=0 go list runtime/cgo" work, which fixes the current cmd/go test failure. Change-Id: Ia55ce3ba1dbb09f618ae5f4c8547722670360f59 Reviewed-on: https://go-review.googlesource.com/19001 Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-06runtime/cgo: add cgo support for solaris/amd64Aram Hăvărneanu
Change-Id: Ic9744c7716cdd53f27c6e5874230963e5fff0333 Reviewed-on: https://go-review.googlesource.com/8260 Reviewed-by: Minux Ma <minux@golang.org>
2015-04-28runtime/cgo: use PTHREAD_{MUTEX,COND}_INITIALIZERIan Lance Taylor
Technically you must initialize static pthread_mutex_t and pthread_cond_t variables with the appropriate INITIALIZER macro. In practice the default initializers are zero anyhow, but it's still good code hygiene. Change-Id: I517304b16c2c7943b3880855c1b47a9a506b4bdf Reviewed-on: https://go-review.googlesource.com/9433 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-04-13runtime: remove runtime wait/notify from ppc64x architectures.Srdjan Petrovic
Related to issue #10410 For some reason, any non-trivial code in _cgo_wait_runtime_init_done (even fprintf()) will crash that call. If anybody has any guess why this is happening, please let me know! For now, I'm clearing the functions for ppc64, as it's currently not used. Change-Id: I1b11383aaf4f9f9a16f1fd6606842cfeedc9f0b3 Reviewed-on: https://go-review.googlesource.com/8766 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: Srdjan Petrovic <spetrovic@google.com>
2015-04-03runtime: initialize shared library at library-load timeSrdjan Petrovic
This is Part 2 of the change, see Part 1 here: in https://go-review.googlesource.com/#/c/7692/ Suggested by iant@, we use the library initialization entry point to: - create a new OS thread and run the "regular" runtime init stack on that thread - return immediately from the main (i.e., loader) thread - at the first CGO invocation, we wait for the runtime initialization to complete. The above mechanism is implemented only on linux_amd64. Next step is to support it on linux_arm. Other platforms don't yet support shared library compiling/linking, but we intend to use the same strategy there as well. Change-Id: Ib2c81b1b83bee837134084b75a3beecfb8de6bf4 Reviewed-on: https://go-review.googlesource.com/8094 Run-TryBot: Srdjan Petrovic <spetrovic@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>