Timeloop Mac OS
Time Loop Mac Os X
Glib-2.34.3 build logs on homebrew, mac osx 10.8.2, clang and gcc versions - build log (gcc). Thank you for downloading timeLoop pour Mac from our software library. The download version of timeLoop pour Mac is 0.2. This download is provided to you free of charge. The package you are about to download is authentic and was not repacked or modified in any way by us. The software is periodically scanned by our antivirus system. The part of the program that's stuck inthe infinite loop might 'know' it, because it was deliberately written as an infinite loop 2. One part of the program might monitor another part of the program, to detect a probable infinite loop; for exam. From: michi7x7; To: gtkmm-list gnome org; Subject: Building Glib on CygWin; Date: Wed, 06 Jan 2010 12:34:55 +0100.
| // Source from the xnu kernel used in macOS |
| // source https://opensource.apple.com/source/xnu/xnu-3248.60.10/libsyscall/wrappers/mach_absolute_time.s |
| .globl _mach_absolute_time |
| _mach_absolute_time: |
| pushq%rbp// set up a frame for backtraces |
| movq%rsp,%rbp |
| movq $(_COMM_PAGE_TIME_DATA_START),%rsi |
| 1: |
| movl _NT_GENERATION(%rsi),%r8d// get generation |
| testl%r8d,%r8d// if 0, data is being changed... |
| jz 1b // ...so loop until stable |
| lfence |
| rdtsc// edx:eax := tsc |
| lfence |
| shlq$32,%rdx// rax := ((edx << 32) eax), ie 64-bit tsc |
| orq%rdx,%rax |
| /* |
| * Prior to supporting 'slow' processors, xnu always set _NT_SHIFT to 32. |
| * Now it defaults to 0, unless the processor is slow. In order to maintain |
| * compatibility with both old and new versions of xnu, we mask the shift |
| * down to 0x1F, which maps the old default (32) into the new default (0). |
| */ |
| movl _NT_SHIFT(%rsi),%ecx |
| andl$0x1F,%ecx// *** remove this line once 10.9 is GM *** |
| subq _NT_TSC_BASE(%rsi), %rax// rax := (tsc - base_tsc) |
| shlq%cl,%rax// rax := (tsc - base_tsc) << NT_SHIFT |
| movl _NT_SCALE(%rsi),%ecx |
| mulq%rcx// rdx:rax := ((tsc - base_tsc)<<shift) * scale |
| shrdq$32,%rdx,%rax// divide by 2**32 |
| addq _NT_NS_BASE(%rsi),%rax// (((tsc - base_tsc) * scale) >> 32) + ns_base |
| cmpl _NT_GENERATION(%rsi),%r8d// did the data change during computation? |
| jne 1b |
| popq%rbp |
| ret |
Time Loop Mac Os Download
With the aid from accurate energy estimators, Timeloop generates an accurate processing speed and energy efficiency characterization for any given workload through a mapper that finds the best way to schedule operations and stage data on the specified architecture.
Time Loop Mac Os 11
| #include<stdio.h> |
| #include<mach/mach_time.h> |
| intmain() |
| { |
| uint64_t t = mach_absolute_time(); |
| printf('%lldn', (longlong) t); |
| return (0); |
| } |
| TEXT ·mach_absolute_tim(SB), NOSPLIT, $32 |
| MOVQ $0x7fffffe00000, SI // comm page base |
| timeloop: |
| MOVL nt_generation(SI), R8 |
| TESTL R8, R8 |
| JZ timeloop |
| RDTSC |
| SHLQ $32, DX |
| ORQ DX, AX |
| MOVL nt_shift(SI), CX |
| SUBQ nt_tsc_base(SI), AX |
| SHLQ CX, AX |
| MOVL nt_scale(SI), CX |
| MULQ CX |
| SHRQ $32, AX:DX |
| ADDQ nt_ns_base(SI), AX |
| CMPL nt_generation(SI), R8 |
| JNE timeloop |
| MOVQ AX, ret+0(FP) |
| RET |
| // Implementation of mach_absolute_time in Go AST |
| // based on https://golang.org/src/runtime/sys_darwin_amd64.s |
| #include'textflag.h' |
| // OS X comm page time offsets |
| // http://www.opensource.apple.com/source/xnu/xnu-1699.26.8/osfmk/i386/cpu_capabilities.h |
| #define nt_tsc_base 0x50 |
| #define nt_scale 0x58 |
| #define nt_shift 0x5c |
| #define nt_ns_base 0x60 |
| #define nt_generation 0x68 |
| TEXT ·mach_absolute_time(SB),NOSPLIT,$0-8 |
| MOVQ$0x7fffffe00000, BP /* comm page base */ |
| timeloop: |
| MOVQ nt_generation(BP), R8 |
| TESTL R8, R8 |
| JZ timeloop |
| RDTSC |
| SHLQ$32, DX |
| ORQ DX, AX |
| MOVL nt_shift(BP), R9 |
| ANDL$0x1F, R9 |
| SUBQ nt_tsc_base(BP), AX |
| SHLQ CX, AX |
| MOVL nt_scale(BP), R9 |
| MULQ R10 |
| SHRQ$32, AX:DX |
| ADDQ nt_ns_base(BP), AX |
| CMPL nt_generation(BP), R8 |
| JNE timeloop |
| RET |