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README

README 2.1 KB
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  1. Please, download the latest gperftools code from: https://github.com/gperftools/gperftools
    2. 

  2. The Intel(R) Software Guard Extensions (Intel(R) SGX) tcmalloc is based on gperftools-2.5 (the latest version avaialble at the release date).
    3. 

  3. 

  4. Do the following to enable tcmalloc in Intel(R) SGX:
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  5. 1. Copy libsgx_tcmalloc.a to the Intel(R) SGX SDK installation directory.
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  6. 2. Add "-Wl,--whole-archive -lsgx_tcmalloc -Wl,--no-whole-archive" into enclave linking options in the Makefile.
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  7.    For example:
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  8.    Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
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  9. 	-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
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  10. 	-Wl,--whole-archive -lsgx_tcmalloc -Wl,--no-whole-archive \
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  11. 	-Wl,--start-group -lsgx_tstdc -lsgx_tstdcxx -l$(Crypto_Library_Name) -l$(Service_Library_Name) -Wl,--end-group \
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  12. 	-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
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  13. 	-Wl,-pie,-eenclave_entry -Wl,--export-dynamic  \
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  14. 	-Wl,--defsym,__ImageBase=0 \
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  15. 	-Wl,--version-script=Enclave/Enclave.lds
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  16. 

  17.    NOTE: The flags "-Wl,--whole-archive -lsgx_tcmalloc -Wl,--no-whole-archive" must be inserted before "-Wl,--start-group -lsgx_tstdc -lsgx_tstdcxx -Wl,--end-group".
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  18.          Otherwise, the enclave build will fail.
    19. 

  19. 

  20. 3. Set the enclave HeapMaxSize equal or larger than 0x900000 in Enclave.config.xml. For example:
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  21.    <HeapMaxSize>0x900000</HeapMaxSize>
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  22.    
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  23. Intel(R) SGX SDK includes a C++ library based on STLPort (sgx_tstdcxx) and a modern one based on libcxx (sgx_tcxx).
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  24. By default, the trusted TCMalloc library uses sgx_tcxx. However, you may change that by editing "./gperftools-2.5/autogen-linux.sh".
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  25. From:
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  26.    CPPFLAGS="-I../../../common/inc -I../../../common/inc/tlibc -I../../../common/inc/internal/ -I../../../sdk/tlibcxx/include -I../../../sdk/trts/"
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  27. To:
    28. 

  28.    CPPFLAGS="-I../../../common/inc -I../../../common/inc/tlibc -I../../../common/inc/internal/ -I../../../sdk/tlibstdcxx/stlport -I../../../sdk/trts/"
    29. 

  29. Note that if your enclave links with sgx_tcmalloc, you must use the same C++ library you choose to build tcmalloc with. Otherwise, the target enclave build will fail.
    30.