| ... | ... | @@ -452,10 +452,12 @@ struct _LIBUNWIND_HIDDEN dl_iterate_cb_data { |
| 452 | 452 | #error "_LIBUNWIND_SUPPORT_DWARF_UNWIND requires _LIBUNWIND_SUPPORT_DWARF_INDEX on this platform." |
| 453 | 453 | #endif |
| 454 | 454 | |
| 455 | #if defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE) |
| 455 | 456 | #include "FrameHeaderCache.hpp" |
| 456 | 457 | |
| 457 | 458 | // There should be just one of these per process. |
| 458 | 459 | static FrameHeaderCache ProcessFrameHeaderCache; |
| 460 | #endif |
| 459 | 461 | |
| 460 | 462 | static bool checkAddrInSegment(const Elf_Phdr *phdr, size_t image_base, |
| 461 | 463 | dl_iterate_cb_data *cbdata) { |
| ... | ... | @@ -476,8 +478,10 @@ int findUnwindSectionsByPhdr(struct dl_phdr_info *pinfo, size_t pinfo_size, |
| 476 | 478 | auto cbdata = static_cast<dl_iterate_cb_data *>(data); |
| 477 | 479 | if (pinfo->dlpi_phnum == 0 || cbdata->targetAddr < pinfo->dlpi_addr) |
| 478 | 480 | return 0; |
| 481 | #if defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE) |
| 479 | 482 | if (ProcessFrameHeaderCache.find(pinfo, pinfo_size, data)) |
| 480 | 483 | return 1; |
| 484 | #endif |
| 481 | 485 | |
| 482 | 486 | Elf_Addr image_base = calculateImageBase(pinfo); |
| 483 | 487 | bool found_obj = false; |
| ... | ... | @@ -505,7 +509,9 @@ int findUnwindSectionsByPhdr(struct dl_phdr_info *pinfo, size_t pinfo_size, |
| 505 | 509 | found_obj = checkAddrInSegment(phdr, image_base, cbdata); |
| 506 | 510 | } |
| 507 | 511 | if (found_obj && found_hdr) { |
| 512 | #if defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE) |
| 508 | 513 | ProcessFrameHeaderCache.add(cbdata->sects); |
| 514 | #endif |
| 509 | 515 | return 1; |
| 510 | 516 | } |
| 511 | 517 | } |
Andrew Kelley <andrew@ziglang.org> 2020-08-20 13:36:44-07:00
lib