`CodeBlob::is_buffer_blob()` method is incorrectly used in few places because BufferBlob is not "leaf" class. You need to add checks for its subclasses too.
I also updated statistic output for CodeCache (`-XX:+PrintCodeCache -XX:+Verbose`) and corresponding test to reflect current state of code blobs. Tested tier1-4, stress, xcomp New output: Non-nmethod blobs: #67 runtime = 43K (hdr 4K 10%, loc 1K 3%, code 36K 84%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #0 upcall = 0K #1 uncommon trap = 0K (hdr 0K 13%, loc 0K 2%, code 0K 84%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #1 deoptimization = 2K (hdr 0K 3%, loc 0K 1%, code 2K 94%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #1 exception = 0K (hdr 0K 30%, loc 0K 3%, code 0K 63%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #3 safepoint = 4K (hdr 0K 4%, loc 0K 1%, code 4K 93%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #639 adapter = 955K (hdr 44K 4%, loc 24K 2%, code 880K 92%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #1 mh_adapter = 10K (hdr 0K 0%, loc 0K 0%, code 9K 99%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #1 vtable = 32K (hdr 0K 0%, loc 0K 0%, code 32K 99%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #12 buffer blob = 917K (hdr 0K 0%, loc 0K 0%, code 916K 99%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #0 other = 0K Output before: Non-nmethod blobs: #66 runtime = 42K (hdr 4K 10%, loc 1K 3%, code 36K 84%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #1 uncommon trap = 0K (hdr 0K 13%, loc 0K 2%, code 0K 84%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #1 deoptimization = 2K (hdr 0K 3%, loc 0K 1%, code 2K 94%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #639 adapter = 955K (hdr 44K 4%, loc 24K 2%, code 880K 92%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #12 buffer blob = 917K (hdr 0K 0%, loc 0K 0%, code 916K 99%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) #6 other = 47K (hdr 0K 0%, loc 0K 0%, code 46K 98%, stub 0K 0%, [oops 0K 0%, metadata 0K 0%, data 0K 0%, pcs 0K 0%]) ------------- Commit messages: - 8349753: Incorrect use of CodeBlob::is_buffer_blob() in few places Changes: https://git.openjdk.org/jdk/pull/23607/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23607&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8349753 Stats: 47 lines in 4 files changed: 45 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/23607.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/23607/head:pull/23607 PR: https://git.openjdk.org/jdk/pull/23607
