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doc: more go1.8.html
Mutex profiling, syscall, fmt, go/types, html/template. TBR=See https://golang.org/cl/33244 Updates #17929 Change-Id: I1ba0649171d6f6a69646a90eb65db6674cb903af Reviewed-on: https://go-review.googlesource.com/33684 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Brad Fitzpatrick
parent
1aa191b468
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93dfb49d86
2 changed files with 89 additions and 30 deletions
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@ -36,7 +36,8 @@ The release <a href="#ports">adds support for 32-bit MIPS</a>,
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<a href="#gc">reduces GC pauses</a> by eliminating stop-the-world stack rescanning,
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<a href="#h2push">adds HTTP/2 Push support</a>,
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<a href="#http_shutdown">adds HTTP graceful shutdown</a>,
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<a href="#more_context">more context support</a>,
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<a href="#more_context">adds more context support</a>,
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<a href="#mutex_prof">enables profiling mutexes</a>,
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and <a href="#sort">simplifies sorting slices</a>.
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</p>
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@ -64,7 +65,7 @@ Go now supports 32-bit MIPS on Linux for both big-endian
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</p>
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<p>
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Go now requires DragonFly BSD 4.4.4 or later. <!-- CL 29491 -->
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Go now requires DragonFly BSD 4.4.4 or later. <!-- CL 29491, CL 29971 -->
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</p>
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<p>
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@ -223,6 +224,10 @@ It has moved to the “tools” repository and is and is available via
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<p>
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TODO: more. proto? standalone profiles with symbols?
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<pre>
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runtime/pprof: output CPU profiles in pprof protobuf format (CL 33071)
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runtime/pprof: write profiles in protobuf format. (CL 32257)
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</pre>
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</p>
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<h3 id="tool_trace">Trace</h3>
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@ -233,6 +238,7 @@ cmd/trace: add option to output pprof files (CL 23324)
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cmd/trace: fix a runnable goroutine count bug (CL 25552)
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cmd/trace: move process-wide GC events to their own row (CL 30017)
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internal/trace: fix analysis of EvGoWaiting/EvGoInSyscall events (CL 25572)
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cmd/trace: annotate different mark worker types (CL 30702)
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</pre>
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<h3 id="tool_vet">Vet</h3>
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@ -543,6 +549,25 @@ now implements the new
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take a context.</li>
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</ul>
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<h3 id="mutex_prof">Mutex Contention Profiling</h3>
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<p>
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The runtime and tools now support profiling contended mutexes.
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</p>
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<p>
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Most users will want to use the new <code>-mutexprofile</code>
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flag with <a href="/cmd/go/#hdr-Description_of_testing_flags"><code>go</code> <code>test</code></a>,
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and then use <a href="/cmd/pprof/">pprof</a> on the resultant file.
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</p>
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<p>
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Lower-level support is also available via the new
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<a href="/pkg/runtime/#MutexProfile"><code>MutexProfile</code></a>
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and
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<a href="/pkg/runtime/#SetMutexProfileFraction"><code>SetMutexProfileFraction</code></a>.
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</p>
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<h3 id="minor_library_changes">Minor changes to the library</h3>
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<p>
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@ -936,6 +961,20 @@ crypto/x509: return error for missing SerialNumber (CL 27238)
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</dd>
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</dl>
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<dl id="fmt"><dt><a href="/pkg/fmt/">fmt</a></dt>
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<dd>
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<p><!-- CL 30611 -->
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<a href="/pkg/fmt/#Scanf"><code>Scanf</code></a>,
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<a href="/pkg/fmt/#Fscanf"><code>Fscanf</code></a>, and
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<a href="/pkg/fmt/#Sscanf"><code>Sscanf</code></a> now
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handle spaces differently and more consistently than
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previous releases. See the
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<a href="/pkg/fmt/#hdr-Scanning">scanning documentation</a>
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for details.
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</p>
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</dd>
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</dl>
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<dl id="go_doc"><dt><a href="/pkg/go/doc/">go/doc</a></dt>
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<dd>
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<p><!-- CL 29870 -->
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@ -945,6 +984,31 @@ crypto/x509: return error for missing SerialNumber (CL 27238)
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</dd>
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</dl>
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<dl id="go_types"><dt><a href="/pkg/go/types/">go/types</a></dt>
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<dd>
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<p><!-- CL 30715 -->
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The new function
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<a href="/pkg/go/types/#Default"><code>Default</code></a>
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returns the default "typed" type for an "untyped" type.
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</p>
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<p><!-- CL 31939 -->
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The alignment of <code>complex64</code> now matches
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the <a href="/cmd/compile/">Go compiler</a>.
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</p>
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</dd>
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</dl>
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<dl id="html_template"><dt><a href="/pkg/html/template/">html/template</a></dt>
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<dd>
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<p><!-- CL 14336 -->
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The package now validates
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the <code>"type"</code> attribute on
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a <code><script></code> tag.
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</p>
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</dd>
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</dl>
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<dl id="image_png"><dt><a href="/pkg/image/png/">image/png</a></dt>
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<dd>
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<p> <!-- CL 32143, CL 32140 -->
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@ -1411,7 +1475,6 @@ crypto/x509: return error for missing SerialNumber (CL 27238)
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</dd>
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</dl>
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<dl id="strconv"><dt><a href="/pkg/strconv/">strconv</a></dt>
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<dd>
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<p> <!-- CL 31210 -->
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@ -1423,6 +1486,29 @@ crypto/x509: return error for missing SerialNumber (CL 27238)
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</dd>
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</dl>
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<dl id="syscall"><dt><a href="/pkg/syscall/">syscall</a></dt>
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<dd>
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<p> <!-- CL 25050, CL 25022 -->
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The <a href="/pkg/syscall/#Getpagesize"><code>Getpagesize</code></a>
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now returns the system's size, rather than a constant value.
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Previously it always returned 4KB.
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</p>
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<p> <!-- CL 31446 -->
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The signature
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of <a href="/pkg/syscall/#Utimes"><code>Utimes</code></a> has
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changed on Solaris to match all the other Unix systems'
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signature. Portable code should continue to use
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<a href="/pkg/os/#Chtimes"><code>os.Chtimes</code></a> instead.
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</p>
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<p> <!-- CL 32319 -->
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The <code>X__cmsg_data</code> field has been removed from
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<a href="/pkg/syscall/#Cmsghdr"><code>Cmsghdr</code></a>.
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</p>
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</dd>
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</dl>
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<dl id="text_template"><dt><a href="/pkg/text/template/">text/template</a></dt>
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<dd>
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<p> <!-- CL 31462 -->
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@ -12,7 +12,6 @@ API additions and behavior changes:
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cmd/compile, runtime, etc: get rid of constant FP registers (CL 28095)
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cmd/compile, runtime: add go:yeswritebarrierrec pragma (CL 30938)
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cmd/compile/internal/gc: add runtime/trace support (CL 25354)
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cmd/compile/internal/gc: enable new parser by default (CL 27203)
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cmd/compile/internal/syntax: fast Go syntax trees, initial commit (CL 27195)
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cmd/compile: add compiler phase timing (CL 24462)
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@ -37,28 +36,14 @@ cmd/link: split large elf text sections on ppc64x (CL 27790)
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cmd/link: trampoline support for external linking on ARM (CL 31143)
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cmd/objdump: implement objdump of .o files (CL 24818)
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fmt: document and adjust Scanf space handling to eliminate a few paradoxes (CL 30611)
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go/build: allow % in ${SRCDIR} expansion for Jenkins (CL 31611)
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go/build: do not record go:binary-only-package if build tags not satisfied (CL 31577)
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go/build: implement default GOPATH (CL 32019)
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go/printer: don't drop required semi/linebreak after /*-comment (CL 33016)
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go/types: expose Default function, which converts untyped T to T (CL 30715)
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go/types: match cmd/compile's alignment for complex64 (CL 31939)
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html/template: check "type" attribute in <script> (CL 14336)
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runtime, cmd/trace: annotate different mark worker types (CL 30702)
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runtime, runtime/cgo: revert CL 18814; don't drop signal stack in new thread on dragonfly (CL 29971)
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runtime/pprof: output CPU profiles in pprof protobuf format (CL 33071)
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runtime/pprof: write profiles in protobuf format. (CL 32257)
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runtime/race: update race runtime (CL 32160)
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runtime: Profile goroutines holding contended mutexes. (CL 29650)
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runtime: assume 64kB physical pages on ARM (CL 25021)
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runtime: disable stack rescanning by default (CL 31766)
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runtime: don't call cgocallback from signal handler (CL 30218)
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runtime: fetch physical page size from the OS (CL 25050)
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runtime: fix check for vacuous page boundary rounding (CL 27230)
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runtime: fix map iterator concurrent map check (CL 24749)
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runtime: fix newextram PC passed to race detector (CL 29712)
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@ -68,19 +53,7 @@ runtime: limit the number of map overflow buckets (CL 25049)
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runtime: pass windows float syscall args via XMM (CL 32173)
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runtime: print sigcode on signal crash (CL 32183)
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runtime: record current PC for SIGPROF on non-Go thread (CL 30252)
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runtime: report GCSys and OtherSys in heap profile (CL 29276)
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runtime: sleep on CLOCK_MONOTONIC in futexsleep1 on freebsd (CL 30154)
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runtime: use RtlGenRandom instead of CryptGenRandom (CL 29700)
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runtime: use clock_gettime(CLOCK_REALTIME) for nanosecond-precision time.now on arm64, mips64x (CL 32177)
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runtime: use correct system page size on all arches (CL 25022)
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runtime: handle SIGPIPE in c-archive and c-shared programs (CL 32796)
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syscall: Clearenv now unsets env vars on Windows (CL 33168)
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syscall: add bounds checking and error returns to ParseNetlinkMessage (CL 26990)
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syscall: fix Send{msg,msgN}, Recvmsg and control message handling on solaris (CL 30171)
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syscall: make Getpagesize return system-reported page size (CL 25051)
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syscall: make Utimes on Solaris match all the other geese (CL 31446)
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syscall: remove X__cmsg_data from Cmsghdr (CL 32319)
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syscall: unify NsecToTime{spec,val}, fix for times < 1970 (CL 30826)
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syscall: validate ParseDirent inputs (CL 23780)
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