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BRUG: Evolution of Ruby GC
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Sergey Avseyev
October 03, 2013
Programming
1
290
BRUG: Evolution of Ruby GC
Sergey Avseyev
October 03, 2013
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Transcript
Evolution of Ruby GC
alloca(3) void f1(int n) { int *r; r = alloca(n
* sizeof(int)); ... } int f2() { float x; f1(42); ... }
alloca(3) f2() void f1(int n) { int *r; r =
alloca(n * sizeof(int)); ... } int f2() { float x; f1(42); ... } float
alloca(3) f2() void f1(int n) { int *r; r =
alloca(n * sizeof(int)); ... } int f2() { float x; f1(42); ... } float f1(42) int *
alloca(3) f2() void f1(int n) { int *r; r =
alloca(n * sizeof(int)); ... } int f2() { float x; f1(42); ... } float f1(42) int[42] int *
alloca(3) f2() void f1(int n) { int *r; r =
alloca(n * sizeof(int)); ... } int f2() { float x; f1(42); ... } float
Reference Counting 1
Reference Counting 2
Reference Counting 1
Reference Counting 0
Reference Counting 1 1 Cycle!
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Copying GC Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Sweep Root Objects
Mark & Lazy Sweep: 1.9 heap free list NULL
Mark & Lazy Sweep: 1.9 heap free list
Mark & Lazy Sweep: 1.9 heap free list
Mark & Lazy Sweep: 1.9 heap free list NULL
Mark & Lazy Sweep: 1.9 heap free list NULL
Mark & Sweep: 2.0 Root Objects Bitmap
Generational GC: 2.1 Большинство либо умирают молодыми, либо выживают и
существуют достаточно долго
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects Minor GC: 1
Generational GC: 2.1 Root Objects
Generational GC: 2.1 Root Objects
Generational GC: 2.1 Root Objects Minor GC: 2
Generational GC: 2.1 Root Objects Minor GC: 2
Generational GC: 2.1 Root Objects Remember Set
Generational GC: 2.1 Root Objects Remember Set Major GC
Generational GC: 2.1 Root Objects Remember Set Major GC
Generational GC: 2.1 Root Objects Remember Set Major GC
Generational GC: 2.1 Root Objects Remember Set
Generational GC: 2.1 Old New
Generational GC: 2.1 Old New Write Barrier
Generational GC: 2.1 Root Objects Remember Set val = rb_str_new("foo");
RARRAY_PTR(ary)[0] = val;
Generational GC: 2.1 Root Objects Remember Set val = rb_str_new("foo");
RARRAY_PTR(ary)[0] = val;
Generational GC: 2.1 Root Objects Remember Set val = rb_str_new("foo");
RARRAY_PTR(ary)[0] = val;
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