Export of internal Abseil changes

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d35c72d705155dcd89a92835103540f14c643d10 by Gennadiy Rozental <rogeeff@google.com>:

helpxml changed to report types of flags with built-in value type.

PiperOrigin-RevId: 275131440

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f3478792943d7dd40a6ef6083a8e5d374f43a65e by Abseil Team <absl-team@google.com>:

Add space padding tests for hex conversions.

PiperOrigin-RevId: 275120155

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7c2e4725403e173660f33f94af686a75d3722936 by Andy Soffer <asoffer@google.com>:

Fix https://github.com/abseil/abseil-cpp/issues/379
by renaming `roundup` to `round_up`

PiperOrigin-RevId: 275106110

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84cb30d6ee509961ac4359cfdda1360973b9527d by Laramie Leavitt <lar@google.com>:

Move random_internal::wide_multiply into a file by the same name.

PiperOrigin-RevId: 275059359

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06d691a8c187b5d899e7863784b23bdcfd580cb2 by Abseil Team <absl-team@google.com>:

Add missing "return" keyword.

PiperOrigin-RevId: 275036408
GitOrigin-RevId: d35c72d705155dcd89a92835103540f14c643d10
Change-Id: Id837b4de6c9cfe18f0a088363754bfe389df985b
This commit is contained in:
Abseil Team 2019-10-16 15:51:11 -07:00 committed by Andy Soffer
parent ab3552a189
commit a15364ce4d
12 changed files with 275 additions and 118 deletions

View file

@ -211,7 +211,7 @@ struct LowLevelAlloc::Arena {
// Result of sysconf(_SC_PAGESIZE)
const size_t pagesize;
// Lowest power of two >= max(16, sizeof(AllocList))
const size_t roundup;
const size_t round_up;
// Smallest allocation block size
const size_t min_size;
// PRNG state
@ -336,11 +336,11 @@ size_t GetPageSize() {
size_t RoundedUpBlockSize() {
// Round up block sizes to a power of two close to the header size.
size_t roundup = 16;
while (roundup < sizeof(AllocList::Header)) {
roundup += roundup;
size_t round_up = 16;
while (round_up < sizeof(AllocList::Header)) {
round_up += round_up;
}
return roundup;
return round_up;
}
} // namespace
@ -350,8 +350,8 @@ LowLevelAlloc::Arena::Arena(uint32_t flags_value)
allocation_count(0),
flags(flags_value),
pagesize(GetPageSize()),
roundup(RoundedUpBlockSize()),
min_size(2 * roundup),
round_up(RoundedUpBlockSize()),
min_size(2 * round_up),
random(0) {
freelist.header.size = 0;
freelist.header.magic =
@ -528,7 +528,7 @@ static void *DoAllocWithArena(size_t request, LowLevelAlloc::Arena *arena) {
ArenaLock section(arena);
// round up with header
size_t req_rnd = RoundUp(CheckedAdd(request, sizeof (s->header)),
arena->roundup);
arena->round_up);
for (;;) { // loop until we find a suitable region
// find the minimum levels that a block of this size must have
int i = LLA_SkiplistLevels(req_rnd, arena->min_size, nullptr) - 1;