xxix
The code examples provided with this book have been tested and validated using
Intel Optane DC persistent memory. Since the PMDK is vendor neutral, they will also
work on NVDIMM-N devices. PMDK will support any future persistent memory product
that enters the market.
The code examples used throughout this book are current at the time of
publication. All code examples have been validated and tested to ensure they compile
and execute without error. For brevity, some of the examples in this book use assert()
statements to indicate unexpected errors. Any production code would likely replace
these with the appropriate error handling actions which would include friendlier
error messages and appropriate error recovery actions. Additionally, some of the code
examples use different mount points to represent persistent memory aware file systems,
for example “/daxfs”, “/pmemfs”, and “/mnt/pmemfs”. This demonstrates persistent
memory file systems can be mounted and named appropriately for the application, just
like regular block-based file systems. Source code is from the repository that accompanies
this book – https://github.com/Apress/programming-persistent-memory.
Since this is a rapidly evolving technology, the software and APIs references
throughout this book may change over time. While every effort is made to be backward
compatible, sometimes software must evolve and invalidate previous versions. For this
reason, it is therefore expected that some of the code samples may not compile on newer
hardware or operating systems and may need to be changed accordingly.
Book Conventions
This book uses several conventions to draw your attention to specific pieces of
information. The convention used depends on the type of information displayed.
Computer Commands
Commands, programming library, and API function references may be presented in line
with the paragraph text using a monospaced font. For example:
To illustrate how persistent memory is used, let’s start with a sample program
demonstrating the key-value store provided by a library called libpmemkv.
PrefaCe
The code examples provided with this book have been tested and validated using
Intel Optane DC persistent memory. Since the PMDK is vendor neutral, they will also
work on NVDIMM-N devices. PMDK will support any future persistent memory product
that enters the market.
The code examples used throughout this book are current at the time of
publication. All code examples have been validated and tested to ensure they compile
and execute without error. For brevity, some of the examples in this book use assert()
statements to indicate unexpected errors. Any production code would likely replace
these with the appropriate error handling actions which would include friendlier
error messages and appropriate error recovery actions. Additionally, some of the code
examples use different mount points to represent persistent memory aware file systems,
for example “/daxfs”, “/pmemfs”, and “/mnt/pmemfs”. This demonstrates persistent
memory file systems can be mounted and named appropriately for the application, just
like regular block-based file systems. Source code is from the repository that accompanies
this book – https://github.com/Apress/programming-persistent-memory.
Since this is a rapidly evolving technology, the software and APIs references
throughout this book may change over time. While every effort is made to be backward
compatible, sometimes software must evolve and invalidate previous versions. For this
reason, it is therefore expected that some of the code samples may not compile on newer
hardware or operating systems and may need to be changed accordingly.
Book Conventions
This book uses several conventions to draw your attention to specific pieces of
information. The convention used depends on the type of information displayed.
Computer Commands
Commands, programming library, and API function references may be presented in line
with the paragraph text using a monospaced font. For example:
To illustrate how persistent memory is used, let’s start with a sample program
demonstrating the key-value store provided by a library called libpmemkv.
PrefaCe