8265101: Remove unnecessary functions in os*.inline.hpp

[iklam]

Many functions like os::write, os::exit, os::dll_unload, etc, are implemented in various os*.inline.hpp files. This forces many .hpp and .cpp files to explicitly include "runtime/os.inline.hpp".

There's no performance reason to inline these functions. They will make a system call, whose overhead is way bigger than the cost of making an extra function call.

The full list methods moved from os*inline.hpp to os_<platform>.cpp are:

os::dll_unload(void *lib)
os::lseek(int fd, jlong offset, int whence)
os::fsync(int fd)
os::ftruncate(int fd, jlong length)
os::read(int fd, void *buf, unsigned int nBytes)
os::write(int fd, const void *buf, unsigned int nBytes)
os::close(int fd)
os::socket_close(int fd)
os::socket(int domain, int type, int protocol)
os::recv(int fd, char* buf, size_t nBytes, uint flags)
os::send(int fd, char* buf, size_t nBytes, uint flags)
os::raw_send(int fd, char* buf, size_t nBytes, uint flags)
os::connect(int fd, struct sockaddr* him, socklen_t len)
os::get_host_by_name(char* name)
os::exit(int num)

I also took this chance to remove unnecessary inclusion of os.hpp and os.inline.hpp from various files. I added some missing #include directives that were exposed as a result.

• Notes for Reviewers: please start from os*.{hpp,cpp} files first.
• Tested with mach5: tier1, builds-tier2, builds-tier3, builds-tier4 and builds-tier5. Also locally: aarch64, arm, ppc64, s390, x86, and zero.

---

Progress

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Issue

• JDK-8265101: Remove unnecessary functions in os*.inline.hpp

Reviewers

• David Holmes (@dholmes-ora - Reviewer) ⚠️ Review applies to 399eefc
• Kim Barrett (@kimbarrett - Reviewer) ⚠️ Review applies to 399eefc

Reviewing

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[bridgekeeper]

👋 Welcome back iklam! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@iklam The following labels will be automatically applied to this pull request:

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[iklam]

/label remove serviceability

[openjdk]

@iklam
The serviceability label was successfully removed.

[mlbridge]

Webrevs

• 01: Full - Incremental (67422c61)
• 00: Full (399eefcc)

[dholmes-ora]

Hi Ioi,

This all seems fine to me. I agree these seem unlikely to need to be inlined for performance.

Thanks,
David

[openjdk]

@iklam This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8265101: Remove unnecessary functions in os*.inline.hpp

Reviewed-by: dholmes, kbarrett

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At the time when this comment was updated there had been 2 new commits pushed to the master branch:

• 28c35ae: 8259288: Debug build failure with clang-10 due to -Wimplicit-int-float-conversion
• ca6b1b4: 8171381: [TEST_BUG] [macos] javax/swing/JPopupMenu/7156657/bug7156657.java fails on OS X

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[iklam]

Thanks @dholmes-ora and @kimbarrett for the review.
Tested again in mach5 build tiers 1-5.
/integrate

[openjdk]

@iklam Since your change was applied there have been 2 commits pushed to the master branch:

• 28c35ae: 8259288: Debug build failure with clang-10 due to -Wimplicit-int-float-conversion
• ca6b1b4: 8171381: [TEST_BUG] [macos] javax/swing/JPopupMenu/7156657/bug7156657.java fails on OS X

Your commit was automatically rebased without conflicts.

Pushed as commit 33b6378.

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