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60b8e77be4bab1bbd3b4c3b70054879229634511 by Derek Mauro <dmauro@google.com>:

Use _MSVC_LANG for some C++ dialect checks since MSVC doesn't
set __cplusplus accurately by default.

https://devblogs.microsoft.com/cppblog/msvc-now-correctly-reports-__cplusplus/

See GitHub #722.

PiperOrigin-RevId: 371362181

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5d736accdff04db0e722f377c0d79f2d3ed53263 by Martijn Vels <mvels@google.com>:

Fix the estimated memory size for CordRepExternal

PiperOrigin-RevId: 371350380

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eaaa1d8a167aeca67a2aa3a098a2b61a9d72172f by Martijn Vels <mvels@google.com>:

Remove flakes by not enforcing re-allocated pointers do never match original

Tests that do multiple updates could end up with the original allocated pointer on a 2nd resize, so the 'EqIfPrivate' should not assume that if we do 'not' have the capacity that all following relocations will never match the original. We only care about 'pointer unchanged if private and there is capacity', trying to establish 'pointer changed at some point due to re-allocation; is pointless.

PiperOrigin-RevId: 371338965

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d1837bee6bade1902b095c1cbf64231668bb84c5 by Martijn Vels <mvels@google.com>:

Undo inline of small data copy in cord

This leads to a performance regression as the code is not inlined (absent hard FDO inputs), and there are no suitable tail call options.

PiperOrigin-RevId: 371332332

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06dc64b833069efc7d18b11df607c8c22be690da by Martijn Vels <mvels@google.com>:

Add final instrumentation for Cordz and remove 'old' cordz logic.

This change instruments the last cord function for cordz. It removes the 'old' functions: set_tree, replace_tree, UpdateCordzStatistics and RecordMetrics.

PiperOrigin-RevId: 371219909

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a5e0be538579c603052feec03e6d9910c43ea787 by Martijn Vels <mvels@google.com>:

Extend the life of CordRep* if inside a snapshot

If a snapshot (potentially) includes the current CordzInfo, we need to extent the lifetime of the CordRep*, as the snapshot 'point in time' observation of the cord should ideally be preserved.

PiperOrigin-RevId: 371146151

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74d77a89774cd6c8ecdeebee0193b294a39383d6 by Martijn Vels <mvels@google.com>:

Instrument std::string consuming methods: ctor, operator=, Append and Prepend

This change moves the 'steal into CordRep' logic into a separate function so we can use it directly in the ctor, operator assign and append and prepend, allowing Cordz instrumentation with the proper method attributes.

The assign operator is implemented in AssignLargeString leaving the dispatch inlined in cord.h (which as a side effects also allows clean tail calls in the AssignLargeString method)

PiperOrigin-RevId: 371094756

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b39effc45266b7ce2e7f96caa3b16cb6e3acc2dd by Martijn Vels <mvels@google.com>:

Add Cordz instrumentation to CordReader

PiperOrigin-RevId: 370990181
GitOrigin-RevId: 60b8e77be4bab1bbd3b4c3b70054879229634511
Change-Id: I96af62e6f1a643e8b1228ae01e6c84e33706bb05