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src: move arch, platform and release into node_metadata.cc #25293

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src: move arch, platform and release into node_metadata.cc #25293

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joyeecheung
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@joyeecheung joyeecheung commented Dec 31, 2018 •
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Move definitions of more metadata into node_metadata{.h, .cc}
so the data can be reused and easily inspected in C++.

In a peudo-release build:

(lldb) p node::per_process::metadata
(node::Metadata) $0 = {
  versions = {
    node = "12.0.0-nightly2018-12-31819a868a49a2b7dbb7b3adab2b79cc8b783f7279"
    v8 = "7.1.302.33-node.8"
    uv = "1.24.1"
    zlib = "1.2.11"
    ares = "1.15.0"
    modules = "68"
    nghttp2 = "1.34.0"
    napi = "3"
    llhttp = "1.0.1"
    http_parser = "2.8.0"
    openssl = "1.1.0j"
    cldr = "34.0"
    icu = "63.1"
    tz = "2018e"
    unicode = "11.0"
  }
  release = (name = "node", sourceUrl = "https://nodejs.org/download/release/v12.0.0-nightly2018-12-31819a868a49a2b7dbb7b3adab2b79cc8b783f7279/node-v12.0.0-nightly2018-12-31819a868a49a2b7dbb7b3adab2b79cc8b783f7279.tar.gz", headersUrl = "https://nodejs.org/download/release/v12.0.0-nightly2018-12-31819a868a49a2b7dbb7b3adab2b79cc8b783f7279/node-v12.0.0-nightly2018-12-31819a868a49a2b7dbb7b3adab2b79cc8b783f7279-headers.tar.gz")
  arch = "x64"
  platform = "darwin"
}
Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines

@joyeecheung
src: move arch, platform and release into node_metadata.cc
819a868 
Move definitions of more metadata into node_metadata{.h, .cc}
so the data can be reused and easily inspected in C++.
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@joyeecheung build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/2117/pipeline

@nodejs-github-bot nodejs-github-bot added the c++ Issues and PRs that require attention from people who are familiar with C++. label Dec 31, 2018
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CI: https://ci.nodejs.org/job/node-test-pull-request/19895/

addaleax
addaleax approved these changes Jan 1, 2019
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src/node_metadata.h Outdated
Release release;

std::string arch;
std::string platform;
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Can the extern Metadata metadata; on L104 be const?

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I don't think Metadata itself can be const - the ICU data versions have to be loaded after they are initialized. Other members should be able to be made const though.

bnoordhuis
bnoordhuis reviewed Jan 3, 2019
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Turning string literals into mutable std::strings is kind of inelegant. It'd be better to have some kind of struct that lives in rodata:

extern "C" static const struct {
  char arch[sizeof(NODE_ARCH)];
  char platform[sizeof(NODE_PLATFORM)];
  // etc.
} node_metadata = {
  NODE_ARCH,
  NODE_PLATFORM,
  // etc.
};

src/node_metadata.h Outdated Show resolved Hide resolved
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joyeecheung commented Jan 4, 2019 •
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I've marked per_process:metadata.release, per_process:metadata.arch and per_process:metadata.platform added in this PR const. It should be possible to move the non-intl version strings const too, but I'd prefer leave that to another PR (also it's probably better if we make sure Metadata is a singleton and all its members are static)

CI: https://ci.nodejs.org/job/node-test-pull-request/19932/

addaleax
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Just reaffirming my LGTM

@joyeecheung joyeecheung added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Jan 4, 2019
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Landed in 6c01621

@joyeecheung joyeecheung closed this Jan 6, 2019
joyeecheung added a commit that referenced this pull request Jan 6, 2019
@joyeecheung
src: move arch, platform and release into node_metadata.cc
6c01621 
Move definitions of more metadata into node_metadata{.h, .cc}
so the data can be reused and easily inspected in C++.

PR-URL: #25293
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
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addaleax commented Jan 9, 2019

This needs to be backported to v11.x.

refack pushed a commit to refack/node that referenced this pull request Jan 14, 2019
@joyeecheung @refack
src: move arch, platform and release into node_metadata.cc
b028251 
Move definitions of more metadata into node_metadata{.h, .cc}
so the data can be reused and easily inspected in C++.

PR-URL: nodejs#25293
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
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This applies cleanly now.

addaleax pushed a commit that referenced this pull request Jan 14, 2019
@joyeecheung @addaleax
src: move arch, platform and release into node_metadata.cc
e9b4d24 
Move definitions of more metadata into node_metadata{.h, .cc}
so the data can be reused and easily inspected in C++.

PR-URL: #25293
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
@BridgeAR BridgeAR mentioned this pull request Jan 16, 2019
Merged
BridgeAR pushed a commit to BridgeAR/node that referenced this pull request Jan 16, 2019
@joyeecheung @BridgeAR
src: move arch, platform and release into node_metadata.cc
3d4fe73 
Move definitions of more metadata into node_metadata{.h, .cc}
so the data can be reused and easily inspected in C++.

PR-URL: nodejs#25293
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
@MylesBorins MylesBorins mentioned this pull request Jan 24, 2019
Merged
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@jasnell jasnell jasnell approved these changes

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